Black Sequin One-Shoulder Plus Size Formal Gown with Cutout

Sleek, sculpted, and undeniably striking, this black sequin gown delivers a bold take on classic eveningwear. The one-shoulder neckline is elevated with a modern keyhole cutout, creating a sharp, eye-catching focal point while maintaining secure, comfortable coverage.

A single long sleeve—fully adorned in shimmering sequins—adds dramatic contrast to the sleeveless side, giving the gown a fashion-forward, asymmetrical edge. Crafted from stretch sequin fabric, the design hugs your curves while allowing flexibility and ease of movement.

Fitted through the bodice and hips, the silhouette flows into a full-length skirt finished with a high front slit, offering both mobility and a confident, leg-lengthening effect. Fully lined for a smooth, comfortable feel, this gown is a standout choice for formal events, galas, pageants, or black-tie evenings.

Limited Sizes in Stock
Onyx Black is almost sold out.  Once it’s gone, it’s gone. We are not restocking this style. Don’t miss your chance to own this standout look.

Love this silhouette? Also, check out the Sapphire Blue version.

• Slim silhouette
• Stretch sequin fabric
• Floor length
• Hollow to hem measures 61 inches
• Asymmetrical neckline
• Fitted bodice with cut-out detail
• Lined bodice
• One shoulder strap, long sleeve, pouf style
• Lined sleeve
• Natural waistline
• Fitted skirt
• Right leg slit
• Skirt fully lined in stretch knit
• Asymmetrical back
• Center back zipper
• Sweep train

• Model is 5'8 inches tall wearing a size 16
• Fit to your waist
• Allow for alterations
• Spot clean only

Need sizing help?
Contact our Fashion Team.

Q: How high is the slit and is it wearable?

A: The thigh-high slit is definitely statement-making, but it’s positioned to allow for easier walking while still offering coverage when standing naturally.

Q: Is the length suitable for formal events?

A: Yes, the floor-length hem with a slight sweep makes it ideal for formal occasions, adding elegance and presence.

Q: What kind of overall vibe does this dress give?

A: It delivers high-impact glamour, bold, confident, and red-carpet ready with a modern twist thanks to the asymmetrical neckline and sleeve.

We ship UPS for all domestic retail shipments.

Transit Times:

- Ground (3-5 business days)
- Three-Day Air (3 business days)
- Two-Day Air (2 business days)
- Overnight Air (1 business day)

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Whenever possible, we exchange merchandise for size, color or another style. Sydney's Closet offers free ground shipping to send you the exchange item(s).

All returns need a RA to be processed. You must get a RA within 5 (five) days of receiving your items.

Follow the instructions on our returns & exchanges portal.