People.com Celebrity Britney Spears's Vegas Show Draws Katy Perry, Miley Cyrus The 21-song set features hits, great dancers and lots of lip-syncing By Mark Gray Published on December 28, 2013 10:55 AM Share Tweet Pin Email Photo: Denise Truscello Britney Spears kicked off her two-year Las Vegas residency Friday with hits, phenomenal dancers, top-of-the-line production, and a lot of lip-syncing. The 21-song show, attended by Katy Perry and Miley Cyrus, felt like a raging nightclub, with hard beats and lasers firing all different directions. “I thought she killed it,” Jersey Shore‘s Pauly D said after the show. Britney, herself, seemed to approve, Tweeting, “Wow perfect audience for the 1st #PieceOfMe show! That was AMAZING! I ❤ you Vegas!!!" The “Perfume” singer spanned her many hits during the 90-minute show at Planet Hollywood’s Axis, covering ground from her Baby One More Time album through her current Britney Jean album. Spears spoke sporadically, uttering a sentence or two between songs. During “Freak Show” she asked for a “hottie” to be brought on stage, only to have her backup dancers snatch Mario Lopez from the crowd. Lopez was forced to crawl on the crowd while Spears pulled him with a leash. “I didn’t expect that,” Lopez told Extra afterward.