Jennifer Lopez proves once again that age is just a number.
The 45-year-old singer looked amazing in a glittery leotard at Sunday's American Music Awards. She danced right next to the 24-year-old Iggy Azalea and the veteran singer didn't miss a beat.
We all know youthful appearances are pretty much a requirement in Hollywood, but these stars take it to a whole new level. How are they 40 and over?!
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