2012 Grammys Rihanna  showed up in a backless  black Armani  gown and curly blonde  looking flawless and super sexy. 2012 Grammys At the Battleship LA Premiere held at Nokia Theatre L.A Rihanna  wears a white  Adam Selman gown that had a cowl necklace looked terrific with Neil Lane Jewels and Blahnik sandals.  BATTLESHIP ...