LAS VEGAS - Britney Spears proved that even though she is still resorting to a bit of lip syncing she can still thrill the crowd.
Spears opened up her Pieces of Me performance at The Planet Hollywood Resort & Casino to a strong ovation.
She sang all of her hits as she performed before a star-studded crowd that included Katy Perry, Miley Cyrus, Adam Lambert, Ke$ha, Selena Gomez, and Vice-President Joe Biden.
Britney even convinced the vice-president to get up on stage with her and sing a little bit on her song "Perfume."
Most people do not realize that Vice-President Biden once took second place in a singing contest in Dover, Delaware.
Miley Cyrus was asked up on stage and she did some female-to-female twerking on Britney's song "Oops!...I Did It Again."
Spears had a record breaking 19 costume changes, along with 8 wig changes, and 6 string bikini thong changes.
Britney called Adam Lambert up on stage who presented her with a jar of his Magic Glitter which he told the crowd retails for $29.99 and is available at Macys, Target, and Kohls.
SIDENOTE: Ling Chow Rangoon with iRumors said that Britney looked absolutely stunning and no one noticed her cellulite as it was covered up perfectly.