During Britnney spear’s Las Vegas stint, she had promised a real live show to her fans. But this seems to be getting a little difficult for her. Britney’s manager, Adam Leber, confirmed to Medium.com that Brit needed some help with her vocals for her “Piece of me”shows at the Planet Hollywood. He said “To put on the show that she puts on, it’s virtually impossible to sing the entire time and do what she does. She’s singing on every song, basically, when she has the ability to sing. There’s no way you can dance for 90 minutes straight and sing the entire time”. Though, Brit has been called for several times for lip syncing, since December, it has not disturbed the sale of tickets. Brit has renewed her contract with Planet Hollywood and will continue performing through February 2015.