Rihanna's performance outfit showed off her Egyptian chest tattoo. This image appears in the gallery:The Most Revealing Outfits At The Grammy Awards 2013 9. Rihanna's performance outfit showed off her Egyptian chest tattoo. Rihanna performs onstage during the 55th Annual GRAMMY Awards at STAPLES Center 12 images See the full gallery: The Most Revealing Outfits At The Grammy Awards 2013