Britney Spears was all smiles yesterday when she left a rehearsal studio in Thousand Oaks, CA. She's been making frequent stops at various dance studios after it was announced that she will be taking up residency at a casino in Las Vegas this coming Fall. Rumors popped up that Britney will be performing at Planet Hollywood, but there hasn't been an official confirmation just yet. Regardless, she has another big event to look forward to this Summer — the release of her new single, "Ooh La La." A version of the Smurfs 2 song leaked online last week, but Britney claims that it was only a demo. She tweeted on Friday, "I heard an early demo of 'Ooh La La' smurfed its way onto the Internet today. The real version will be on radio and iTunes June 16." Don't forget to vote for Britney in our POPSUGAR 100 bracket — you may even get a chance to win a Victoria Beckham handbag!
Britney Spears Works Up a Sweat Ahead of Her Vegas Debut
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