The Best of Britney Spears

Britney divorced Kevin in November 2006, citing irreconcilable differences. The next year brought some personal woes for the starlet: She entered rehab briefly, and ended up losing custody of her kids in October 2007 for undisclosed reasons. However, her music career didn't suffer too much: She released Blackout and performed at the MTV Video Music Awards in this super sparkly, midriff-baring ensemble.