Popsugar Fashion Met Gala Sexiest Dresses at Met Gala 2014 A Formal Theme Doesn't Keep Sexy Away May 5, 2014 by Leah Melby View On One Page Photo 6 of 14 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Rihanna at the Costume Institute Ball Rihanna's pure white look was far from angelic, thanks to the cropped top that fell right below her bust (allowing a tattoo to peek through!). Previous Next Start Slideshow Met GalaRed Carpet