Trending Categories
Trending Brands
Whether heading to the red carpet or taking the time for a long-overdue date night, we all need a few go-to formal dresses for special occasions. Find a one-of-a-kind look that makes you sparkle for up to 90% less at thredUP.
1,571 items
Sort by:
![Hailey by Adrianna Papell Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/585084303/complimentary.jpg)
![Hailey by Adrianna Papell Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/585084223/complimentary.jpg)
Hailey by Adrianna Papell
Cocktail Dress
Size 6
$53.99 $29.69 45% off with code GOBIG
78% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583845065/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583844936/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$65.99 $36.29 45% off with code GOBIG
70% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583351952/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583352142/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$68.99 $37.94 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583351888/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583352056/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$64.99 $35.74 45% off with code GOBIG
70% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583923880/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583923819/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$70.99 $39.04 45% off with code GOBIG
68% off estimated retail![White House Black Market Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/581744018/complimentary.jpg)
![White House Black Market Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/581744003/complimentary.jpg)
White House Black Market
Cocktail Dress
Size 00
$24.99 $13.74 45% off with code GOBIG
92% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583328641/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583328108/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXL
$68.99 $37.94 45% off with code GOBIG
69% off estimated retail![Adrianna Papell Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/581241071/complimentary.jpg)
![Adrianna Papell Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/581241100/complimentary.jpg)
Adrianna Papell
Cocktail Dress
Size 6 Petite
$40.99 $22.54 45% off with code GOBIG
78% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583360971/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583360846/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$62.99 $34.64 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/584628486/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/584628429/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$61.99 $34.09 45% off with code GOBIG
72% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/584188715/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/584188652/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$92.99 $51.14 45% off with code GOBIG
58% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583857877/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583857940/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$54.99 $30.24 45% off with code GOBIG
75% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/584181244/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/584181211/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$62.99 $34.64 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/582944134/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/582944238/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$57.99 $31.89 45% off with code GOBIG
73% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583342275/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583342081/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$61.99 $34.09 45% off with code GOBIG
72% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583342304/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583342113/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$65.99 $36.29 45% off with code GOBIG
70% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583285867/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583285983/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$69.99 $38.49 45% off with code GOBIG
68% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583352442/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583352362/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$68.99 $37.94 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583285822/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583285770/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$64.99 $35.74 45% off with code GOBIG
70% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583351184/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583351267/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$67.99 $37.39 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583364187/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583364129/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$62.99 $34.64 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583362076/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583362030/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$73.99 $40.69 45% off with code GOBIG
66% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583271729/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583271812/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$97.99 $53.89 45% off with code GOBIG
56% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583316585/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583316555/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXL
$65.99 $36.29 45% off with code GOBIG
70% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583362248/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583362216/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$73.99 $40.69 45% off with code GOBIG
66% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583362129/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583362168/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$56.99 $31.34 45% off with code GOBIG
74% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583274336/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583274382/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$66.99 $36.84 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583276588/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583276688/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$74.99 $41.24 45% off with code GOBIG
66% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583353080/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583353007/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$61.99 $34.09 45% off with code GOBIG
72% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583364319/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583364364/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$67.99 $37.39 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583250105/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583250167/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$63.99 $35.19 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583319808/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583319773/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$61.99 $34.09 45% off with code GOBIG
72% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583349696/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583349739/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$57.99 $31.89 45% off with code GOBIG
73% off estimated retail![White House Black Market Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/591644221/complimentary.jpg)
![White House Black Market Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/591644191/complimentary.jpg)
White House Black Market
Cocktail Dress
Size 00
$75.99 $41.79 45% off with code GOBIG
76% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/582838766/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/582838839/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$61.99 $34.09 45% off with code GOBIG
72% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/583271471/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/583270898/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXL
$62.99 $34.64 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/571773705/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/571773597/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$72.99 $40.14 45% off with code GOBIG
67% off estimated retail![Laundry by Shelli Segal Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/571712378/complimentary.jpg)
![Laundry by Shelli Segal Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/571712343/complimentary.jpg)
Laundry by Shelli Segal
Cocktail Dress
Size 4
$47.99 $26.39 45% off with code GOBIG
78% off estimated retail![Monique Lhuillier Bridesmaid Pink Gwen Gown (view 2)](https://cf-assets-thredup.thredup.com/assets/569089850/complimentary.jpg)
![Monique Lhuillier Bridesmaid Pink Gwen Gown (view 1)](https://cf-assets-thredup.thredup.com/assets/569089897/complimentary.jpg)
Monique Lhuillier Bridesmaid
Pink Gwen Gown
Size 6
$58.99 $32.44 45% off with code GOBIG
79% off estimated retail![Nicole Miller Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/576546230/complimentary.jpg)
![Nicole Miller Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/576546219/complimentary.jpg)
Nicole Miller
Cocktail Dress
Size 0 Petite
$48.99 $26.94 45% off with code GOBIG
88% off estimated retail![Monique Lhuillier Bridesmaid Blush Amelia Gown (view 2)](https://cf-assets-thredup.thredup.com/assets/567801423/complimentary.jpg)
![Monique Lhuillier Bridesmaid Blush Amelia Gown (view 1)](https://cf-assets-thredup.thredup.com/assets/567801400/complimentary.jpg)
Monique Lhuillier Bridesmaid
Blush Amelia Gown
Size 0
$49.99 $27.49 45% off with code GOBIG
84% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/572542785/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/572542830/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$73.99 $40.69 45% off with code GOBIG
66% off estimated retail![Monique Lhuillier Bridesmaid Pink Gwen Gown (view 2)](https://cf-assets-thredup.thredup.com/assets/569090257/complimentary.jpg)
![Monique Lhuillier Bridesmaid Pink Gwen Gown (view 1)](https://cf-assets-thredup.thredup.com/assets/569090279/complimentary.jpg)
Monique Lhuillier Bridesmaid
Pink Gwen Gown
Size 6
$61.99 $34.09 45% off with code GOBIG
78% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/573175325/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/573175287/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$67.99 $37.39 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/572221071/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/572220962/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$50.99 $28.04 45% off with code GOBIG
71% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/572203894/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/572203795/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$70.99 $39.04 45% off with code GOBIG
68% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/572624983/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/572624972/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$58.99 $32.44 45% off with code GOBIG
73% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/572221879/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/572221674/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXS
$68.99 $37.94 45% off with code GOBIG
69% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/571492373/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/571492243/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size Med
$75.99 $41.79 45% off with code GOBIG
65% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/571852294/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/571852258/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXL
$67.99 $37.39 45% off with code GOBIG
69% off estimated retail![White House Black Market Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/576986514/complimentary.jpg)
![White House Black Market Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/576986479/complimentary.jpg)
White House Black Market
Cocktail Dress
Size 0
$85.99 $47.29 45% off with code GOBIG
73% off estimated retail![Show Me Your Mumu Cocktail Dress (view 2)](https://cf-assets-thredup.thredup.com/assets/571852101/complimentary.jpg)
![Show Me Your Mumu Cocktail Dress (view 1)](https://cf-assets-thredup.thredup.com/assets/571852206/complimentary.jpg)
Show Me Your Mumu
Cocktail Dress
Size XXL
$67.99 $37.39 45% off with code GOBIG
69% off estimated retail