The Best Instagrams from the 2015 Met Gala

Last night's Met Gala, with its jaw-dropping dresses, was basically like fashion prom. And as with any group of glammed-up kids, rules were broken—like the strict no-selfie policy issued by Anna Wintour before the event. Too bad, say these stars, who snapped pics anyway. And now we get to benefit!

Kim Kardashian and Jennifer Lopez

Beyoncé and Naomi Campbell

Prabal Gurung, Reese Witherspoon, George Clooney and Kristen Wiig

Marc Jacobs, Cher, Kanye West and Kim Kardashian

Kendall Jenner and Hailey Baldwin

Rihanna and Shanina Shaik

Rihanna's Surprise Performance

Sofia Vergara and Reese Witherspoon

Justin Bieber and Lady Gaga

Katy Perry, Madonna and Lady Gaga

Bill Cunningham and Linda Evangelista

Beyoncé

Rihanna

Jennifer Lopez and Donatella Versace

Naomi Campbell

Jessica Alba

Kendall Jenner

Justin Bieber

Hailey Baldwin

Karlie Kloss and Gigi Hadid

Liu Wen

Rosie Huntington-Whiteley

Diane von Furstenberg, Kate Mara, Gigi Hadid, Kate Beckinsale

Solange Knowles

Gigi Hadid

Kendall Jenner

Cara Delevingne and Stella McCartney

Sarah Jessica Parker

Sofia Vergara

Selena Gomez

Emily Ratajkowski

Lily Aldridge

Marc Jacobs

Katy Perry

Alexa Chung

Zac Posen and Katie Holmes

Anna Ewers

Jessica Hart

Donatella Versace

Kristen Wiig

Jourdan Dunn

Diane von Furstenberg

Emma Roberts

Bella Hadid

Liu Wen

Katie Holmes

Adriana Lima

Karen Elson

Emma Roberts

Karlie Kloss

Jaime King

Burberry shares a sneak-peek at Jourdan Dunn and Naomi Campbell's Met Gala look.

Georgina Chapman

Natasha Poly

Chiara Ferragni

Sarah Jessica Parker

Caroline Trentini

See Every Look from the 2015 Met Gala

Everything Your Favorite Stars Have Ever Worn to the Met Gala