Saturday night, Katy Perry will be hosting the “Waking Up in Vegas” party where you can expect she’ll be performing some of her hit singles like “Waking Up in Vegas,” “Hot and Cold” and “I Kissed a Girl.”

Special shout out to Nick Ernst, John Castoro, Rich DeBari and the Jersey boys who will most likely be dominating the dance-floor and doing the fist pump all night long!

Filed under: Celebrity Appearances, Nightlife & Events