February 4, 2012 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/keha-chris-brown-heat-up-the-us-hot-hollywood-party-/1652662/5441741/photo.jhtmlAshlee Simpson Ashley Greene Ashley Olsen Ashley Scott Ashley Tappin