From Mark Ronson To Robert Downey Jr., L.A. Partied Hard Last Night

by Emily Green · December 9, 2011

Mark Ronson DJs the G-Star Rodeo Drive store opening for a slew of scenesters; Guy Ritchie, Robert Downey Jr. and Rachel McAdams step out for the Sherlock Holmes premiere - it all went down Tuesday in L.A., get your details in this edition of Last Night's Parties. MORE>>