Rihanna arrives at the 54th annual Grammy Awards wearing an Armani dress on Feb. 12, 2012 in Los Angeles.
Giorgio Armani is a red-carpet regular among Hollywood’s young starlets, but 2012 saw the company make waves in music, too. The designer collaborated with pop singer Lady Gaga to create outfits for her “Born This Way” tour and worked with Rihanna on the revealing black number that she wore to the Grammy Awards in February.