Katy Perry, Selena Gomez, Adam Lambert and More Party on at Britney Spears Las Vegas Concert

Britney Opens In Las Vegas
10 reasons you'll love/hate the extravaganza.
While Britney Spears worked it last night onstage during the opening night of her Piece of Me residency concert at Planet Hollywood in Las Vegas, her celebrity friends and family partied on in the audience.

Miley Cyrus, Katy Perry, Adam Lambert, Selena Gomez and Britney Spears’ family dance together as they watch her first show in Las Vegas.

Britney’s sister Jamie Lynn Spears was spotted with her finance Jamie Watson as she sat next to her mother and threw her hands in the air in support of her sister who was on stage inches away from them.

Selena Gomez was also dancing next to Katy Perry as she was taking photos during the show.

Britney tweeted her appreciation of her celebrity friends attending the concert.



She also received flowers from Celine Dion.


Britney definitely felt the love last night.