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Britney Spears' "Me Against The Music" has literally taken on a whole new meaning. In honor of the pop princess' upcoming 30th birthday (we can't believe it, either!), MTV News is letting you vote for your favorite Britney video of all time! OF ALL TIME! The Britney Spears Tournament: 30 Videos for 30 Years contest pins the singer's video hits against each other, bracket style: Think March Madness plus gratuitous outfit changes. Fans can vote in the hope that their pick makes it through each round, which eventually leads to the ultimate birthday gift -- the official video winner, announced on Brit's Dec. 2 birthday!
+ Cast your vote for your favorite Britney Spears music video at Britney30.MTV.com! The first round of voting begins TODAY and closes Tuesday, Nov. 22. Keep an eye out for round 2 beginning Wednesday, Nov. 23!