Tonight marks fashion's biggest party of the year—the Met Gala—which will debut this year's exhibition, China: Through the Looking Glass. Get a sneak-peek inside the star-studded event with these celebrity and designer Instagrams offering up a look at the behind-the-scenes action—from pampering for the red carpet to letting loose at the glam after party.

Kim Kardashian and Jennifer Lopez

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Beyonce and Naomi Campbell

Prabal Gurung, Reese Witherspoon, George Clooney and Kristen Wiig

Marc Jacobs, Cher, Kanye West and Kim Kardashian

Beyonce

Kendall Jenner and Hailey Baldwin

Rihanna and Shanina Shaik

Miley Cyrus and Zoe Kravitz

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

Beyonce

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

Headshot of Lauren Alexis Fisher
Lauren Alexis Fisher
Senior Editor

Lauren Alexis Fisher is the Senior Editor at Cosmopolitan, overseeing digital content across fashion, lifestyle, beauty, sex, and culture. Previously, she was the Market Editor at Harper’s BAZAAR and has written for publications including WWD, Bustle, and W Magazine. When she’s not busy taste-testing her way through every dirty martini in New York, you can follow her on Instagram for bad jokes, good outfits, and annoying vacation pics.