The 2013 Billboard Music Awards were pretty much a party for Pitbull that hardly stopped. Following his performance of 'Feel This Moment' with Christina Aguilera and Morten Harket of A-Ha, he took the stage once more to join Jennifer Lopez for 'Live It Up.'

Lopez rocked the same red bodysuit that she wore in her 'Live It Up' music video, showing off her legendary legs and derriere. The dancing, fashion and music were all appropriately fierce, and no one could stop dancing -- cameras caught Selena Gomez and Taylor Swift getting their respective grooves on in the crowd!