First Comes Love, Then Comes Makeover

From Katy Perry getting in touch with her dark side to Ashton Kutcher's glam makeover, see how falling in love changed these stars' looks!

CHRISTINA AGUILERA

Putting the XXX in X-tina, the singer had mothers across America worried with her non-stop carousel of "reverse-cleavage" tops and nano-minis – before she finally met her match.