Rihanna in Hervé Léger12:09 AM
This weekend Rihanna hit up Las Vegas to help her best friend, Katy Perry, celebrate her bachelorette party. Judging from all the pictures it looks like they had a great time! Even though it was Katy's weekend, Rihanna totally stole the show in this lwd. Rihanna wore this very cute dress by Hervé Léger (Fall 2010 RTW) while attending the "KA" show by Cirque du Soleil at the MGM Grand Hotel/Casino. And she topped off the whole look with nude Louboutins!