Collection: Party Dresses
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Sequin Backless Split Maxi Dress
Regular price $88.73 USDRegular priceUnit price / per -
Tie Back Long Sleeve Slit Dress
Regular price $66.29 USDRegular priceUnit price / per -
Quarter Button Long Sleeve Midi Dress
Regular price $76.49 USDRegular priceUnit price / per -
Mable Backless Asymmetric Ruffle Hem Dress
Regular price $98.93 USDRegular priceUnit price / per -
One Shoulder Ruched Slit Maxi Dress
Regular price $91.80 USDRegular priceUnit price / per -
Contrast Wide Strap Slit Midi Dress
Regular price $59.15 USDRegular priceUnit price / per -
One-Shoulder Ruched Slit Maxi Dress
Regular price $62.21 USDRegular priceUnit price / per -
One-Shoulder Split Maxi Dress
Regular price $59.15 USDRegular priceUnit price / per -
Perfee Tie-Waist Off-Shoulder Split Dress
Regular price $50.99 USDRegular priceUnit price / per -
Satin Spaghetti Strap Slit Midi Dress
Regular price $41.81 USDRegular priceUnit price / per -
Honey Slit One Shoulder Short Sleeve Midi Dress
Regular price $49.97 USDRegular priceUnit price / per -
Contrast Mock Neck Long Sleeve Sweater Dress
Regular price $58.83 USDRegular priceUnit price / per -
Swiss Dot Cutout Sleeveless Maxi Dress
Regular price $57.54 USDRegular priceUnit price / per -
Ruched Turtleneck Long Sleeve Dress
Regular price $49.85 USDRegular priceUnit price / per -
Ruched Lantern Sleeve Dress
Regular price $51.70 USDRegular priceUnit price / per -
Surplice Puff Sleeve Midi Dress
Regular price $40.09 USDRegular priceUnit price / per -
Tied Surplice Short Sleeve Dress
Regular price $49.97 USDRegular priceUnit price / per -
Smocked Color Block Long Sleeve Midi Dress
Regular price $55.64 USDRegular priceUnit price / per -
Striped Round Neck Long Sleeve Dress
Regular price $60.58 USDRegular priceUnit price / per -
Ruched Printed Sleeveless Wrap Dress
Regular price $52.02 USDRegular priceUnit price / per -
Spaghetti Strap Lace-Up Back Split Dress
Regular price $58.13 USDRegular priceUnit price / per -
Twisted Printed Long Sleeve Mini Dress
Regular price $38.42 USDRegular priceUnit price / per -
Asymmetrical Slit Round Neck Long Sleeve Midi Dress
Regular price $41.94 USDRegular priceUnit price / per -
Ribbed Turtleneck Long Sleeve Dress
Regular price $56.41 USDRegular priceUnit price / per
Party Dresses That Celebrate Your Presence
Whether you're dancing under city lights or attending an elegant soirée, the right party dress doesn't just complement the moment — it defines it. At Sienna Sass, we curate party dresses for women who know their worth and want their outfit to say it before they even speak. Each piece captures the spirit of the celebration, while ensuring you're the one they remember.
For graceful movement and bold color blocking, the Color Block Maxi Cami Dress offers a refined, modern silhouette. Searching for sensual elegance? The Satin Cowl Neck Cami Dress radiates understated glamour — perfect for candlelit parties or rooftop nights.
Mini, Maxi & Everything in Between
From playful to poised, our mini party dresses and long party dresses are designed to accentuate your silhouette and mood. The Off-Shoulder Wrap Dress with Side Slit is your statement piece for high-impact entrances, while the Ruched Cowl Neck Top and Maxi Skirt Set offers coordinated elegance in a flowing form.
Holiday Sparkle Meets All-Year Chic
Bring festive radiance to life with our Christmas party dresses — where satin, shimmer and bold silhouettes meet. And when summer calls, our breezy and confident pool party dresses answer. Light, flattering, and full of personality, they’re made for every unforgettable warm-weather moment.
Party Dresses for Every Occasion and Every Woman
Looking for charm with a touch of tradition? Our tea party dresses capture grace in motion, perfect for daytime celebrations. At Sienna Sass, we don’t just offer dresses — we offer statements. Discover a world of party dresses for women who dress to express, impress, and shine.