Britney Announces Vegas Residency, Talks Miley

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Britney Spears, 31, took to Good Morning America Tuesday morning to officially announce her two-year residency at the Planet Hollywood in Las Vegas. Starting on December 27, she'll be performing 50 shows a year, titled Britney, Piece of Me. She also announced that her new album, still untitled, will be released December 3.

Spears described the Vegas show as having a "theater meets club" vibe, and fans will definitely be pleased to know that she's incorporating her brand-new material -- such as her new single Work B**** -- into the show.

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"I'm definitely going to do the greatest hits, but I'm gonna have to put some of my new material into it just to keep it fresh," she dished.

But is Spears, who suffered a psychological breakdown in 2008, both physically and mentally ready for such a grueling schedule?

"I'm definitely ready. I have training for sometimes five hours a day," she said.

During the exclusive GMA interview with Sam Champion, Spears also expressed her support for Miley Cyrus' controversial MTV Video Music Awards performance. No stranger to MTV VMAs controversy herself -- having famously performed Oops! ... I Did It Again in a nude jumpsuit and memorably kissing Madonna onstage -- she clearly sympathized with the outspoken 20-year-old.

"I think anytime you do a performance that's that memorable, you're going to have criticism," she mused. "I think she's doing her thing. She's being herself, so, I give props to her."

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Spears was surprised Tuesday morning by more than 1,000 of her fans who had gathered in the Mojave desert for her highly anticipated appearance. The fans held signs showing a picture of Spears, as the singer circled above in a helicopter.

"I really enjoy what I do. I have fun performing," she reflected on her already legendary career. "I feel like I'm at home onstage, and I feel blessed that I'm able to do that -- that is my job."

Tickets for Britney, Piece of Me go on sale today.