rihannafoursquare.jpgdress red carpet America Music Awards Rihanna giorgio baldi santa monica

After performing at the American Music Awards (and rocking a red hot dress on the red carpet), Rihanna slipped into a one shoulder gown and dined at Giorgio Baldi in Santa Monica.

RiRi gave us plenty of faces on the way in and out, but our favorite expression wasn't on the R&B star's face -- but rather, on the security staffer who escorted her out of the restaurant...