At the 2012 Sports Illustrated Beauties and Beats Music Festival in Las Vegas, Selebrities performs "Night Heat." For more photos and videos of Kate Upton, Anne V, Chrissy Teigen, Bar Refaeli and the other sexy SI Swimsuit Models go to http://si.com/swimsuit

Take a look at the Behind The Scenes from the SI Swimsuit 2012 Launch Week and the Beauty and Beats Festival.