May 7, 2011 Photos | Ke$ha, Chris Brown Heat Up The Us Hot Hollywood Party Edit Delete Tags Autopost Ke$ha, Chris Brown Heat Up The Us Hot Hollywood Party Related Artists Ke$ha Source: http://www.mtv.com/photos/?fid=1652662Kristen Bell Kristin Cavallari Kristin Kreuk Kristy Swanson Kylie Bax Lacey Chabert