Britney Spears' Las Vegas Residency Begins, Brings Star-Studded Crowd Including Katy Perry, Miley Cyrus and Selena Gomez

It's show time for Britney Spears!
The pop icon kicked off her two-year Las Vegas residency on Friday, Dec. 27 at Planet Hollywood Resort & Casino in front of an adoring star-studded audience, including Miley Cyrus, Katy Perry, Selena Gomez and Adam Lambert. Spears' family and friends were also in attendance.
The 32-year-old singing sensation, donning many elaborate costumes and several stylish wigs, belted out her numerous hits spanning from her ...Baby One More Time album to her recent Britney Jean release at the AXIS theater. The Grammy winner was joined by a group of backup dancers during the top-of-the-line produced 90-minute Piece of Me show.

According to Billboard, the set kicked off with Spears performing "Work Bitch" and she "descended from the sky in a globe-like cage." She sported a champagne-colored sequined ensemble that was reminiscent of the get-up she wore in her sultry "Toxic" music video, according to the magazine. She performed 24 songs in total, which featured at times "a massive rotating tree, pyrotechnics, rain and fire." Spears closed the show with the classic tune "Crazy" and came back for an encore of the upbeat track "Till the World Ends."
"Wow… perfect audience for the 1st #PieceOfMe show! That was AMAZING!" Spears gushed afterwards on Twitter, along with a snapshot of herself sporting a black two-piece outfit and a Fedora on stage.
Spears also thanked several of her famous fans, including the "Roar" singer and the Queen of Twerk, for their support during her Sin City debut.

"@KatyPerry Was SOOOO good to see you again girl!  Glad we could make our Vegas date happen :)" she wrote. "@MileyCyrus Love you so much!  Thank you for coming to #PieceOfMe! I adore you :)," she added.
Speaking of the 21-year-old Bangerz artist, Cyrus was spotted dancing in the front row, and was doing "a lot of grinding," according to a concert eyewitness.