Lili Reinhart strikes a silly pose while leaning next to her main man Cole Sprouse.
Chris Rock donned a tux for the evening while Megalyn Echikunwoke went for a simple, elegant design.
Vito Schnabel, Nina Dobrev, Zac Posen, Julia Garner, Andrew Garfield and Gia Coppola snuck in a group photo at an after-party.
Miley Cyrus and Liam Hemsworth donned all black for Gucci's after-party.
Alexa Chung rocked a custom minidress with floral detailing.
Emma Stone and Carey Mulligan smiled for the cameras at an after-party. Mulligan looked pretty in Prada while Stone looked lovely in Louis Vuitton.
Dakota Johnson, Alssandro Michele, Jared Leto and his fake head shared a smile at the Gucci after-party.
After wearing a gold and pink number by Dapper Dan, Regina Hall changed into a red and green pants ensemble and black top.
After rocking a rainbow-colored Versace design on the carpet, Lupita Nyong'o switched into a show-stopping blue number with red lace.
Justin Theroux snapped a picture from the DJ booth.
After wearing a pink Valentino number on the carpet, Naomi Campbell opted for a black dress with feathered detailing and a green cover-up. Meanwhile, Salma Hayek stuck with her gorgeous gold and black Gucci gown.
Zac Posen planted a sweet kiss on Nina Dobrev's cheek.
Liam Hemsworth, Rami Malek, Miley Cyrus, Anthony Vaccarello and Demi Moore gathered together for an epic group photo.
Katy Perry switched out of her original chandelier-inspired look by Moschino for a cheese burger ensemble by the same designer.
Who wouldn't want to hang out with Emma Stone, Carey Mulligan, Sienna Miller and Lauren Santo Domingo?