Black Sequin One Sleeve Bodycon Dress For 21st Birthday

21st Birthday Outfit Dress Black Sequins Short Homecoming Dress Sexy Party Dress Y821 by simplepromdress

Y821 Black Sequin One Sleeve Bodycon Dress For 21st Birthday Party

$148.55

Production time

2-10 days

Shipping time

8-25 days

This item is Made-To-Order. Whether you choose a standard size or custom measurements, our staffs craft each item to order.

Expedited shipping: 8-10 business days
Standard shipping: 10-25 business days

Color may vary between different fabrics. Make sure you order swatches (FREE for 6) first.

Introducing the Y821 Black Sequin One-Sleeve Bodycon Dress, engineered for milestone nights and memory-making moments. This isn’t just a dress for a party—it's a statement of craft, provenance, and poise. The black sequins deliver even distribution and a disciplined, luminous shimmer that stands out under club lights and chandeliers alike, while the asymmetrical one-sleeve silhouette flatters every curve with a refined, confident line from entrance to afterglow.

Couture-grade construction with hand-finished seams that glide over the body and hold a pristine silhouette all night long.
One-sleeve, asymmetrical design paired with tasteful cut-outs for a modern yet timeless look that photographs beautifully from every angle.
Sequin surface with even distribution ensures a uniform, luxe sparkle instead of patchy reflections—the kind that reads as premium in person and on camera.
Built-in bra delivers streamlined, secure support, eliminating distraction and ensuring clean, uninterrupted lines under partywear or evening outerwear.
Premium stretch lining provides all-night comfort and movement, so you can dance, toast, and celebrate without adjustment.
Limited production run from a small-batch atelier, preserving exclusivity and a timeless, collector-grade appeal that remains relevant beyond this season.
Custom sizing available—provide bust, waist, hip, height (without shoes), and height (with shoes) for a tailored fit that honors your unique measurements.

The Y821 is destined not only for a standout 21st birthday party but also for evenings that demand confidence—whether a stylish afterparty, an intimate gala, or a sophisticated night out at the club. Its built-in support keeps lines pristine when paired with a sleek clutch and minimal jewelry, while the dress’ provenance—born from a dedicated atelier tradition—gives you a piece with lasting value beyond the trend cycle.

Who this is ideal for: someone celebrating a milestone in style, who values meticulous craftsmanship, a wardrobe staple with lasting appeal, and a silhouette that flatters in motion. If you want a dress that looks exceptionally crafted, photographs brilliantly, and transitions from intimate celebrations to high-energy gala moments, the Y821 is designed for you.

Why choose it over other party dresses: this piece prioritizes true fit, secure support, and light-catching sparkle through a combination of hand-finished seams, premium stretch lining, and a carefully balanced sequin layout. Its limited availability means you’re not just buying a dress—you’re acquiring a refined, enduring addition to a formal wardrobe that remains relevant for years to come.

Styling tips: pair with sleek ankle-strap heels, a minimalist clutch, and understated earrings to let the sequin texture and asymmetrical silhouette take center stage. For cooler evenings, drape a tuxedo-inspired blazer or a subtle wrap to maintain the dress’s clean lines while adding polish.

Return Policy

Please keep in mind that all dresses are uniquely made to order to keep costs low for our customers. We also understand that colors on your computer screen can be a little different to how they appear in person. For these reasons, we encourage you to order a Swatch (free shipping) to help you decide.

yoyocamp will issue a full refund including shipping for any damaged, defective, or mis-shipped items. If your item arrives damaged or defective, please reach out to Contact Us directly for assistance with processing your return.

FOR ALL STANDARD SIZE DRESSES, SHOES, AND ACCESSORIES:

yoyocamp will issue a full refund of the cost of the returned product if you are not satisfied with your item(s). Contact our Customer Service to initiate the return process within 7 days upon receiving your item(s). The item must be returned in its original condition (if eligible per the return policy).

Please note:
* The item must be unworn, unwashed, unaltered, undamaged and with the original tags attached. We cannot process the return of any faulty item.
* Original shipping fee & return shipping fee will not be refunded.
* As all items (including standard size) are made-to-order, we cannot afford to accept the ‘buy-many-keep-one’ purchase. Our customer service team may cancel an order believed to have been made with that intention.

FOR ALL CUSTOM SIZE DRESSES:

At yoyocamp, we understand that you may want the dress to ideal fit! To help you out, we offer custom sizing on most of our dresses. Custom sizing takes the same amount of time to make and ship to you!

A few things to remember about custom dresses:

Custom dresses are made specifically to the measurements you provide (bust, waist, hips, height, and hollow-to-floor). That means no one else will be able to wear that dress once it's made. Because of this, we are unable to accept any returns on custom dresses. Please double check your measurements and color choice before ordering.

We understand that sometimes small alterations are needed, we offer limited alterations reimbursement for only our custom sizes. Simply send us a picture of your receipt from the tailor and your order number and we'll do the rest! Yes, it really is that easy!

EXCHANGE POLICY

We do not offer an exchange service for any products at this time. Because all items are made-to-order, we do not have ready-made dresses or products that can be shipped in exchange for your returned items. You will need to return unwanted items (if eligible per the return policy), and then place a new order for the replacement items. All new orders are subject to the current production period.

HOW TO RETURN

1. Submit a return request at Contact Us to Customer Service within 7 days of receiving your order. Please include the reason for return and photographs for verification.

2. Once we have approved your request, you will be sent a return form which needs to be included with your return. Please send your item(s) using local post within 7 days from receiving the return form.

3. When we receive the returned package, the item(s) will be inspected to ensure it is in the original condition and has the issues stated in the return request.

4. Once confirmed, the refund will be credited back to the original payment method within 10-15 days (the processing time depends on your payment method and bank).

Please note:
* We reserve the right to refuse the return if received in an unacceptable condition.
* We cannot process any products that are returned without our prior knowledge.
* We are not liable for return item(s) that are lost or damaged, please keep the receipt with tracking information.

CANCELLATION POLICY

All our items are made-to-order, including standard size items, with this in mind, please refer to our cancellation policy below:

Unpaid orders are automatically cancelled after 5 days.
Cancel order within 24 hours of payment for a full refund.
Cancel order 24–72 hours after payment: 80% refund + shipping fee.
Cancel order 72-120 hours after payment: 70% refund + shipping fee.
Cancel order > 120 hours after payment: 60% refund + shipping fee.
Once your order is shipped, it cannot be cancelled.

If you would like to cancel your order, please login to My Orders, select the order you need help with, and request cancellation.

Shipping & Return

This page shows you how to choose a shipping method for your order, estimate shipping cost, and gives other further information on shipping process of yoyocamp.

You can choose your preferable Shipping Method:

Expedited Shipping
This shipping method is the fastest available. Delivery times are between 2-6 days to all major destinations.Expedited shipping fee is calculated based on the weight of your order, starting from US$ 20.99.

Standard Shipping
Standard shipping takes a bit longer than expedited shipping but costs less. Delivery times are between 3-8 days to all major destinations. Standard shipping fee is calculated based on the weight of your order, starting from US$ 14.99.

Super Saving Shipping   

Super saving shipping is the most cost-saving method. But it will take 10-30 days to all major destinations. Super saver shipping fee is calculated based on the weight of your order, starting from US$ 3.99.

Before we can ship your order, yoyocamp.com has to prepare your products, perform strict quality-control tests and package items carefully. The above delivery estimates do not include order processing time. 

Size Chart

This is a measurement of the fullest part of your bust or body circumference at the bust. It is a body measurement which measures the circumference of a woman's torso at the level of the breasts.

Wrap the tape around the fullest part of your bust and center the tape on your back so it's levelled all the way around.

*Tips:
This isn't your bra size!
Your arms should be relaxed, and down at your sides.
Wear the bra you're planning to wear with your dress when taking this.

Note:

Have trouble with choosing size or Additional Requirements on size? Contact us.

Dress Standard Size Chart

Bust Waist Hip Standard Size Chart
US Size	0		2		4		6		8		10		12		14		16		18		20		22		24		26		28		30
EU Size	32		34		36		38		40		42		44		46		48		50		52		54		56		58		60		62
UK Size	4		6		8		10		12		14		16		18		20		22		24		26		28		30		32		34
	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm
Bust	32	81	33	84	34	86	35	89	36	91	37 ½	94	39	99	41	104	43 ¼	109	45 ½	115	47 ¾	120	50	127	53	135	56	142	59	150	63	160
Waist	25 ½	64	26 ½	67	27 ½	69	28 ½	72	29 ½	74	31	79	32 ½	82	34 ¾	87	37 ¼	94	39 ¾	100	42 ¼	107	44 ¾	113	48	122	51 ¼	130	54 ½	138	58 ¾	148
Hips	35 ½	89	36 ½	92	37 ½	94	38 ½	97	39 ½	100	41	104	42 ½	107	44 ½	112	46 ¾	118	49	124	51 ¼	130	53 ½	135	56 ½	143	59 ½	150	62 ½	158	66 ½	168

Dress Length Chart (Hollow To Hem)
US Size	0		2		4		6		8		10		12		14		16		18		20		22		24		26		28		30
EU Size	32		34		36		38		40		42		44		46		48		50		52		54		56		58		60		62
US Size	4		6		8		10		12		14		16		18		20		22		24		26		28		30		32		34
	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm	inch	cm
Mini/Short	28	71	29	74	29	74	30	76	30	76	30	76	30	76	31	79	31	79	32	81	32	81	32	81	33	84	33	84	33	84	33	84
Knee Length	37	94	38	97	38	97	38	97	38	97	39	99	39	99	39	99	39	99	40	102	40	102	40	102	41	104	41	104	41	104	41	104
Tea Length	44	112	46	117	46	117	46	117	46	117	47	119	47	119	48	122	48	122	48	122	48	122	48	122	48	122	48	122	48	122	48	122
Ankle Length	52	132	53	135	53	135	54	137	54	137	54	137	54	137	55	140	55	140	56	142	56	142	56	142	56	142	56	142	56	142	56	142
Floor Length	57	145	58	147	58	147	59	150	59	150	60	152	60	152	61	155	61	155	61	155	61	155	61	155	61	155	61	155	61	155	61	155

Bust

Waist

Hips

Hollow to Hem

Back Shoulder Width

Sleeve Length

Armscye

Arm Circumference

This is a measurement of the fullest part of your bust or body circumference at the bust. It is a body measurement which measures the circumference of a woman's torso at the level of the breasts.

Wrap the tape around the fullest part of your bust and center the tape on your back so it's levelled all the way around.

*Tips:
This isn't your bra size!
Your arms should be relaxed, and down at your sides.
Wear the bra you're planning to wear with your dress when taking this.

Note:

Some styles have ease added for your comfort. If you are in between sizes, it is suggested to call and speak to a stylist or order the dress in custom size.The Hollow to Hem measurement for standard sized floor length dresses includes an extra 2 inches to fit high heels.
Have trouble with choosing size or Additional Requirements on size? Contact us.

Dress Standard Size Chart

Bust Waist Hip Standard Size Chart (inch)
US Size	UK Size	EU Size	Bust	Waist	Hips
0	4	32	32	25 ½	35 ½
2	6	34	33	26 ½	36 ½
4	8	36	34	27 ½	37 ½
6	10	38	35	28 ½	38 ½
8	12	40	36	29 ½	39 ½
10	14	42	37 ½	31	41
12	16	44	39	32 ½	42 ½
14	18	46	41	34 ¾	44 ½
16	20	48	43 ¼	37 ¼	46 ¾
18	22	50	45 ½	39 ¾	49
20	24	52	47 ¾	42 ¼	51 ¼
22	26	54	50	44 ¾	53 ½
24	28	56	53	48	56 ½
26	30	58	56	51 ¼	59 ½
28	32	60	59	54 ½	62 ½
30	34	62	63	58 ¾	66 ½

Dress Length Chart (Hollow To Hem) inch
US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	28	37	44	52	57
2	6	34	29	38	46	53	58
4	8	36	29	38	46	53	58
6	10	38	30	38	46	54	59
8	12	40	30	38	46	54	59
10	14	42	30	39	47	54	60
12	16	44	30	39	47	54	60
14	18	46	31	39	48	55	61
16	20	48	31	39	48	55	61
18	22	50	32	40	48	56	61
20	24	52	32	40	48	56	61
22	26	54	32	40	48	56	61
24	28	56	33	41	48	56	61
26	30	58	33	41	48	56	61
28	32	60	33	41	48	56	61
30	34	62	33	41	48	56	61

Bust Waist Hip Standard Size Chart (cm)
US Size	UK Size	EU Size	Bust	Waist	Hips
0	4	32	81	64	89
2	6	34	84	67	92
4	8	36	86	69	94
6	10	38	89	72	97
8	12	40	91	74	100
10	14	42	94	79	104
12	16	44	99	82	107
14	18	46	104	87	112
16	20	48	109	94	118
18	22	50	115	100	124
20	24	52	120	107	130
22	26	54	127	113	135
24	28	56	135	122	143
26	30	58	142	130	150
28	32	60	150	138	158
30	34	62	160	148	168

Dress Length Chart (Hollow To Hem) cm
US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	71	94	112	132	145
2	6	34	74	97	117	135	147
4	8	36	74	97	117	135	147
6	10	38	76	97	117	137	150
8	12	40	76	97	117	137	150
10	14	42	76	99	119	137	152
12	16	44	76	99	119	137	152
14	18	46	79	99	122	140	155
16	20	48	79	99	122	140	155
18	22	50	81	102	122	142	155
20	24	52	81	102	122	142	155
22	26	54	81	102	122	142	155
24	28	56	84	104	122	142	155
26	30	58	84	104	122	142	155
28	32	60	84	104	122	142	155
30	34	62	84	104	122	142	155

Y821 Black Sequin One Sleeve Bodycon Dress For 21st Birthday Party

Y821 Black Sequin One Sleeve Bodycon Dress For 21st Birthday Party

Return Policy

Shipping & Return

Size Chart

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US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	28	37	44	52	57
2	6	34	29	38	46	53	58
4	8	36	29	38	46	53	58
6	10	38	30	38	46	54	59
8	12	40	30	38	46	54	59
10	14	42	30	39	47	54	60
12	16	44	30	39	47	54	60
14	18	46	31	39	48	55	61
16	20	48	31	39	48	55	61
18	22	50	32	40	48	56	61
20	24	52	32	40	48	56	61
22	26	54	32	40	48	56	61
24	28	56	33	41	48	56	61
26	30	58	33	41	48	56	61
28	32	60	33	41	48	56	61
30	34	62	33	41	48	56	61

US Size	UK Size	EU Size	Bust	Waist	Hips
0	4	32	81	64	89
2	6	34	84	67	92
4	8	36	86	69	94
6	10	38	89	72	97
8	12	40	91	74	100
10	14	42	94	79	104
12	16	44	99	82	107
14	18	46	104	87	112
16	20	48	109	94	118
18	22	50	115	100	124
20	24	52	120	107	130
22	26	54	127	113	135
24	28	56	135	122	143
26	30	58	142	130	150
28	32	60	150	138	158
30	34	62	160	148	168

US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	71	94	112	132	145
2	6	34	74	97	117	135	147
4	8	36	74	97	117	135	147
6	10	38	76	97	117	137	150
8	12	40	76	97	117	137	150
10	14	42	76	99	119	137	152
12	16	44	76	99	119	137	152
14	18	46	79	99	122	140	155
16	20	48	79	99	122	140	155
18	22	50	81	102	122	142	155
20	24	52	81	102	122	142	155
22	26	54	81	102	122	142	155
24	28	56	84	104	122	142	155
26	30	58	84	104	122	142	155
28	32	60	84	104	122	142	155
30	34	62	84	104	122	142	155

US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	28	37	44	52	57
2	6	34	29	38	46	53	58
4	8	36	29	38	46	53	58
6	10	38	30	38	46	54	59
8	12	40	30	38	46	54	59
10	14	42	30	39	47	54	60
12	16	44	30	39	47	54	60
14	18	46	31	39	48	55	61
16	20	48	31	39	48	55	61
18	22	50	32	40	48	56	61
20	24	52	32	40	48	56	61
22	26	54	32	40	48	56	61
24	28	56	33	41	48	56	61
26	30	58	33	41	48	56	61
28	32	60	33	41	48	56	61
30	34	62	33	41	48	56	61

US Size	UK Size	EU Size	Bust	Waist	Hips
0	4	32	81	64	89
2	6	34	84	67	92
4	8	36	86	69	94
6	10	38	89	72	97
8	12	40	91	74	100
10	14	42	94	79	104
12	16	44	99	82	107
14	18	46	104	87	112
16	20	48	109	94	118
18	22	50	115	100	124
20	24	52	120	107	130
22	26	54	127	113	135
24	28	56	135	122	143
26	30	58	142	130	150
28	32	60	150	138	158
30	34	62	160	148	168

US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	71	94	112	132	145
2	6	34	74	97	117	135	147
4	8	36	74	97	117	135	147
6	10	38	76	97	117	137	150
8	12	40	76	97	117	137	150
10	14	42	76	99	119	137	152
12	16	44	76	99	119	137	152
14	18	46	79	99	122	140	155
16	20	48	79	99	122	140	155
18	22	50	81	102	122	142	155
20	24	52	81	102	122	142	155
22	26	54	81	102	122	142	155
24	28	56	84	104	122	142	155
26	30	58	84	104	122	142	155
28	32	60	84	104	122	142	155
30	34	62	84	104	122	142	155

Y821 Black Sequin One Sleeve Bodycon Dress For 21st Birthday Party

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Return Policy

Shipping & Return

Size Chart

You may also like

Customer Reviews

Contact Us

US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	28	37	44	52	57
2	6	34	29	38	46	53	58
4	8	36	29	38	46	53	58
6	10	38	30	38	46	54	59
8	12	40	30	38	46	54	59
10	14	42	30	39	47	54	60
12	16	44	30	39	47	54	60
14	18	46	31	39	48	55	61
16	20	48	31	39	48	55	61
18	22	50	32	40	48	56	61
20	24	52	32	40	48	56	61
22	26	54	32	40	48	56	61
24	28	56	33	41	48	56	61
26	30	58	33	41	48	56	61
28	32	60	33	41	48	56	61
30	34	62	33	41	48	56	61

US Size	UK Size	EU Size	Bust	Waist	Hips
0	4	32	81	64	89
2	6	34	84	67	92
4	8	36	86	69	94
6	10	38	89	72	97
8	12	40	91	74	100
10	14	42	94	79	104
12	16	44	99	82	107
14	18	46	104	87	112
16	20	48	109	94	118
18	22	50	115	100	124
20	24	52	120	107	130
22	26	54	127	113	135
24	28	56	135	122	143
26	30	58	142	130	150
28	32	60	150	138	158
30	34	62	160	148	168

US Size	UK Size	EU Size	Mini/Short	Knee Length	Tea Length	Ankle Length	Floor Length
0	4	32	71	94	112	132	145
2	6	34	74	97	117	135	147
4	8	36	74	97	117	135	147
6	10	38	76	97	117	137	150
8	12	40	76	97	117	137	150
10	14	42	76	99	119	137	152
12	16	44	76	99	119	137	152
14	18	46	79	99	122	140	155
16	20	48	79	99	122	140	155
18	22	50	81	102	122	142	155
20	24	52	81	102	122	142	155
22	26	54	81	102	122	142	155
24	28	56	84	104	122	142	155
26	30	58	84	104	122	142	155
28	32	60	84	104	122	142	155
30	34	62	84	104	122	142	155