WOW’s spies were in Vegas last night and it was a star-studded opening for JLo‘s new residency in sin city. Besides being joined onstage by Ja Rule, Pitbull and Ne-Yo, Lopez’s audience was also celeb-packed. Derek Hough, Ray Liotta and Ryan Seacrest were in da house and Rebel Wilson tweeted pics of her crew which was the unlikely grouping of Hoda Kotb, Kelly Osbourne, Wilson and Justin Bieber. The Beib’s got caught stumbling over someone’s luggage on the way to his seat and JLo’s Mamma, Guadalupe, was videoing and singing along like any proud parent. Exciting way to kick off All I Have, which you can see is a hot ticket and worth the price of admission to the AXIS at Planet Hollywood. I’m a little jealous of spies (photographers Idris + Tony) if you want to know the truth. Watch.