This year's theme was Oscarsei Kawakubo/Comme des Garçons: Art of the In-Between, which celebrates the work of Rei Kawakubo, the founder and designer of Commes des Garçons.
Put your seat belts on kids, you are in for one crazy-wild ride:
Katie Holmes looked insanely gorgeous
Kendall Jenner in sexy La Perla
Hailee Steinfeld in Vera Wang
Rihanna in Comme des Garçons
Liu Wen was pretty in a bit of denim
Rita Ora in custom Marchesa
Julianne Moore in feathers and Chopard jewellery
Hailey Baldwin in stunning Carolina Herrera
Chrissy Teigen and John Legend both in Burberry
Solange Knowles in Thom Browne
Gigi Hadid in Tommy Hilfiger
Madonna in Moschino
Bella Hadid in a strange catsuit by Alexander Wang
Zendaya in Dolce & Gabbana
Lupita Nyong'o in Prada
Nicki Minaj in custom H&M
Katy Perry Maison Margiela
Kylie Jenner in Versace
Tom Brady in Tom Ford and Gisele Bündchen in Stella McCartney
Laura Osnes in gorgeous pink fluff
Priyanka Chopra making a strong case for the trench
Emma Roberts in Diane von Furstenberg
Emily Ratajkowski in Marc Jacobs
Selena Gomez stunned in Coach - also loved up with bae
Love your boots Salma and Lily Aldridge
Curvy model Ashley Graham in custom H&M
Blake Lively's feathered dress is everything
Not a fan of Halle Berry in this Versace
Jessica Chastain in soft yellow Prada
Jennifer Lopez in blue Valentino
Who would have ever thought Kim Kardashian West in Vivienne Westwood would turn out this plain and simple?
Lily-Rose Depp in Chanel
Reese Witherspoon opted for a rather '80s look
Celine Dion in Versace
Boho princesses Mary-Kate Olsen and Ashley Olsen
Elle Fanning in Miu Miu
Kerry Washington's black and metallic dress was just exquisite
Lily Collins was a pretty Gothic Barbie Doll
Lena Dunham mastered this maroon gown
Candice Swanepoel and Joan Smalls opted for simple (but effective) looks
Cara Delevingne in Chanel
Tracee Ellis Ross you must only wear such coats. Forever and ever.
Cassie Ventura killed it
Ruby Rose looked gorgeous in white
Perhaps the craziest thing Claire has ever worn?
Images: Getty