Britney Spearshas spoken about working with Will.I.Am onBlack Eyed Peasfrontman.

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The pop princess claimed: "I love his work. He's all over the place. He's brilliant. When he does talk, he blows you away."
The MTV special also goes behind the scenes of making her seventh studio LP, Femme Fatale, and the video shoot for her next single, Till The World Ends.
When asked about the promo, which is shot in a "grimy and gross" warehouse, the 29-year old revealed: "I feel like I've done so many videos, I'm at the point I want to enjoy myself."

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In the documentary, Spears also sheds some light on her home-life, confessing: "I'm usually pretty busy when I'm not working."
"I have two children, so I usually get them up in the morning, and I'm usually at the gym, and I help cook dinner sometimes ... a lot of the stuff that I do I do early in the morning when my boys are at school."

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The star also talks about her comeback show in Las Vegas, where she surprised her fans at the Palms Hotel and Casino, stating: "It was very exciting. The fans were amazing."
Britney added: "It was good energy, especially when they're screaming. They hype you up and make you feel larger than life."