Besides the fact she's keeping the exact location of the fountain of youth a secret all to herself, Jennifer Lopez is pretty much perfect. There's rarely a time she misses our best dressed list, and so here she is. Showing off her legs-for-days (and then some!) in a daring Versus Versace ensemble designed by Anthony Vaccarello, she looked just the right amount of sexy for the MTV event. And leave it to J. Lo to complement all that gold hardware by upping the bling factor.