Mia | Women's Fall Wedding Guest Dresses Sleeveless Open-Back Thigh-Slit Maxi Gown

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Women's Fall Wedding Guest Dresses Sleeveless Open-Back Thigh-Slit Maxi Gown is your go-to choice for weddings, galas, and formal evening events. This floor-length slip-style gown features a square neckline, ruched waist, dramatic thigh-high slit, and an open back, designed to flatter your natural silhouette in sizes XS through XL.

Why You'll Love It

  • Figure-Flattering Ruching: Gathered fabric at the waist cinches and sculpts your silhouette for a confident, elegant look.
  • Thigh-High Slit: A bold front slit adds movement and drama while keeping the overall look refined and sophisticated.
  • Open Back Detail: The sleek open back creates a striking, elegant finish that sets this gown apart from standard formalwear.

Perfect For

Wear it to a fall or winter wedding as a stunning guest dress, pair it with strappy heels and gold earrings for a black-tie gala, style it for a formal evening dinner, or make it your go-to look for prom or a special birthday celebration.

Care Instructions

  • Hand wash cold or machine wash on a delicate cycle.
  • Do not bleach.
  • Lay flat or hang to dry, away from direct sunlight.
  • Cool iron if needed, avoiding any embellished areas.

Frequently Asked Questions

What neckline does this dress have?
The dress features a square neckline with wide shoulder straps, giving it a sleek and structured look.

Does the dress have an open back?
Yes, the dress features an elegant open back, adding a striking and sophisticated detail to the design.

How high is the slit on this dress?
The slit is a thigh-high front split, creating dramatic movement while maintaining an elegant overall silhouette.

What occasions is this dress suitable for?
It is designed for weddings, galas, formal dinners, prom, and other special evening events.

Size Chart

Size Bust Waist Hips Length
XS 82 cm / 32.3 in 62 cm / 24.4 in 88 cm / 34.6 in 129 cm / 50.8 in
S 86 cm / 33.9 in 66 cm / 26.0 in 92 cm / 36.2 in 130 cm / 51.2 in
M 90 cm / 35.4 in 70 cm / 27.6 in 96 cm / 37.8 in 131 cm / 51.6 in
L 94 cm / 37.0 in 74 cm / 29.1 in 100 cm / 39.4 in 132 cm / 52.0 in
XL 98 cm / 38.6 in 78 cm / 30.7 in 104 cm / 40.9 in 133 cm / 52.4 in
DRESSED FOR THE LIFE YOU ACTUALLY LIVE

SUMMER SALE

These are the pieces you reach for without thinking — because they fit well, travel light, and work harder than they look.

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Customer Reviews

What our customers are saying

Patricia M.
Boston, MA
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"I have been searching for a brand that gets my lifestyle for years. Tamara Boston nailed it on the first order. The linen trousers fit perfectly, arrived in three days, and I have already worn them four times this week."

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