Kim Kardashian
The pregnant Keeping Up With the Kardashians star appears in a Givenchy spring 2016 design.
Gwyneth Paltrow
The actress dons a teal, ruffled chiffon Gucci mini.
Reese Witherspoon & Jim Toth
The actress stuns in an elegant Brandon Maxwell gown alongside her husband.
Rosie Huntington-Whiteley & Jason Statham
The model-actress got the pink memo with this ruffled Gucci confection.
Salma Hayek
And there's another pink gown! This time, Salma puts her own twist on the trend in this cotton-candy colored Gucci design.
Joshua Jackson & Diane Kruger
The longtime couple looks striking as they pose for photos (Diane in Monique Lhuillier).
Saoirse Ronan
The actress is pretty in a pink Gucci frock.
Dakota Johnson
The Fifty Shades of Gray star doesn't get hot and flustered...she tries a bit of mustard with this Gucci gown.
Kim Kardashian & Naomi Campbell
The supermodel also sported a look from the same collection.
Chloe Sevigny
The Big Love alum dons an eclectic patterned Gucci look.
Jared Leto & Diane Kruger
He's a Joker, that Jared Leto! (Jared in Gucci, Diane in Monique Lhuillier).
Jared Leto
Why so serious, Mr. Leto?
Brit Marling
The Babylon and The OA star opts for a coral Gucci suit.
Sam Taylor-Johnson & Aaron Taylor-Johnson
The actor and his wife strike a dashing pose.
Kelly Rohrbach
Leonardo DiCaprio's model girlfriend shows off her fab figure in a white and black gown.
Leonardo DiCaprio
The actor makes a speech at the event.
Usher
The R&B star takes a page from Pharrell...
Amber Valetta
Revenge's Lydia, who now stars in Blood & Oil, channels classic Hollywood.
Mia Maestro
The star of The Strain wows in black.