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Wearing a silver floor-length gown from Marchesa‘s Resort 2012 collection, Rachel McAdams kept warm with co-stars  Robert Downey Jr. and Noomi Rapace at the premiere of Warner Bros. Pictures’ Sherlock Holmes: A Game Of Shadows, held at the Regency Village Theatre tonight (December 6th) in Westwood, California.

Amber Heard went or a classic black and white ensemble, while Jodie Foster chose to go with head-to-toe black.  Pharrell Williams was also in attendance.

PHOTOS: Rachel McAdams & Robert Downey Jr. On The Set Of Sherlock Holmes: A Game Of Shadows

Deck out in sequins, a pregnant Susan Downey joined her husband on the red carpet.  Though Jude Law wasn’t at the premiere, Downey Jr. and director Guy Ritchie went matchedy-matchy in brown suits.  It’s probably a brosef thing.

I wonder if McAdams was pissed that she and Rapace didn’t trade notes prior to the premiere.  Listen!  Did you hear that?  A stylist’s head just rolled across the floor.