Billboard Music Awards 2013: 10 Best Moments (Photos)

Slideshow posted in Photos | Sunday, May 19, 2013

1 of 10: Jennifer Lopez took part in a high-energy performance of 'Live It Up' with Pitbull at the Billboard Music Awards at the MGM Grand Garden Arena on Sunday, May 19, 2013 in Las Vegas.

In typical JLo fashion, she blew the audience away -- prompting one Hollywood actress to Tweet her appreciation.

'My girl @JLo let us have it #BBMA #Wow,' Jessica Alba Tweeted shortly following her performance. (Photo/Vince Bucci / ABC)