Lady Gaga attends the "China: Through The Looking Glass" Costume Institute Benefit Gala. (AFP/Getty)
Alexander Wang and Lady Gaga (AFP/Getty)
Miley Cyrus attends the "China: Through The Looking Glass" Costume Institute Benefit Gala. (AFP/Getty)
Miley Cyrus and Zoe Kravitz (AFP/Getty)
Sofia Vergara and Joe Manganiello (AFP/Getty)
Andre Balazs and Uma Thurman (AFP/Getty)
Anne Hathaway (AFP/Getty)
Jared Kushner and Ivanka Trump (AFP/Getty)
Francesca Amfitheatrof and Reese Witherspoon (AFP/Getty)
Kate Beckingsale (Getty Images)
Emily Blunt (AFP/Getty)
Anna Wintour and Bee Shaffer (AFP/Getty)
Olivier Rousteing and Justin Bieber (Getty Images)
Justin Beiber arrives at the Metropolitan Museum of Art Costume Institute Gala. (Reuters)
Jennifer Lawrence (AFP/Getty)
Jennifer Connelly (AFP/Getty)
Michael Kors and Kate Hudson (AFP/Getty)
Kerry Washington (AFP)
Vanessa Hudgens (AFP/Getty)
Kate Mara (AFP/Getty)
Hannah Davis and Derek Jeter (AFP/Getty)
Rose Byrne (AFP/Getty)
Miranda Kerr (AFP/Getty)
Alicia Keys and Jean Paul Gaultier (AFP/Getty)
FKA twigs and Robert Pattinson (AFP/Getty)
Maggie Gyllenhaal (AFP/Getty)
Cher and Marc Jacobs (AP)