If Jennifer Lopez wanted to steal the show at the American Music Award's she certainly succeeded.There was a stellar line-up of stars at the event including, Christina Aguilera, Justin Bieber, David Guetta and Nicki Minaj, Chris Brown and Katy Perry.But it was Jennifer's raunchy rendition of On The Floor which proved the hot topic of conversation tonight, which was particularly notable because she took to the stage with new beau Casper Smart.
