Mary-Kate and Ashley Olsen

Mary-Kate and Ashley Olsen in all-black ensembles.
Mary-Kate and Ashley Olsen in all-black ensembles.
Emmy Rossum in a J Mendel gown and Manolo Blahnik heels.
Alessandra Ambrosio in a strapless Nonoo dress, Jennifer Fisher jewels and a Tod's clutch.
Lupita Nyong'o in a multi-colored striped Suno outfit, Sophia Webster shoes and Jennifer Fisher earrings.
Jennifer Hudson in a Kaufmanfranco gown.
Anna Wintour and daughter Bee Shaffer in floral-patterned frocks.
John Waters in a gray blazer.
James Marsden wore a Todd Snyder tuxedo.
Bridget Moynahan in a strapless violet gown by Lela Rose.
Greta Gerwig in a Zac Posen gown.
Rihanna wore a sparkly see-through Adam Selman dress.
Solange Knowles in a custom Calvin Klein Collection dress and Jennifer Fisher jewelry.
Glamour editor-in-chief Cindi Leive in a fancy floral number.
Blake Lively in a gold Michael Kors frock and Lorraine Schwartz jewels.
Coco Rocha in a black-and-white Christian Siriano gown.
Naomi Campbell in a glittery gown.
Olivia Wilde in a fringed frock from Decades LA.
Diane von Furstenberg in one of her own designs.
Heidi Klum in a coral Donna Karan gown, Jimmy Choo heels and Lorraine Schwartz jewels.
Allure editor-in-chief Linda Wells in a long-sleeve black dress.
Marion Cotillard in a lacy white Dior frock.
Zoey Deutch in a minidress designed by Rebecca Minkoff.