From Bruno Mars to Katy Perry, see which stars rocked out for the camera at the Sin City extravaganza
Credit: Harper Smith for iHeart Radio
Updated: Monday Sep 23, 2013 | 05:20 PM EDT
By: Kiran Hefa and Alison Schwartz
More from PEOPLE
See More News
6 of 25
The R&B singer knows: It takes a real man to make a shiny purple curtain look cool.
Copyright © 2013 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.
In partnership with AOL