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Jennifer Lopez was not only a winner at the American Music Awards ... but also on the red carpet. The sexy and single Latina looked fit and phenomenal in a fringed mini dress. Oh my, look at those legs! Marc Anthony eat your heart out!

Vanessa Lachey (yes, she changed her name!) hosted the pre-show, and while her hubby Nick stayed home, the brunette bombshell looked understated, yet elegant in white.

Others who wowed for different reasons ... Audrina Patridge in a cleavage baring mini (really??) and Heidi Klum who strutted the carpet in a foil-looking ensemble.