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Britney Spears at the 2007 VMAs

Britney Spears' would-be comeback It was supposed to be Britney's big comeback. Her bald head was covered up. Her post-pregnancy bod was almost back in tip-top shape. And she had a rising club hit in "Gimme More." But a minute into her 2007 MTV Video Music Awards performance, it was painfully... Kevin Winter / AFP / Getty Images