Christina Aguilera's Fashion Hits and Misses

As the newly single mom celebrates her 30th birthday, take a look back at her wildest looks – and vote on her hits and misses

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BLUE HEAVEN

Dirrty no more! A just engaged Aguilera showed off her new sparkler but kept her other accessories minimal with her demure, full-skirted blue dress and elegant updo at Elton John's 2005 Oscar Party in L.A.