WATCH: Jessica Alba Busts a Move on 'Late Night with Jimmy Fallon'

Jessica Alba paid a visit to Jimmy Fallon last night to promote her new comedy, Little Fockers, and somehow he got her to cut a rug! The funny interaction begins with both Alba and Fallon lamenting the fact that they no longer feel like they belong when they head out to dance clubs. 

Jessica says she used to "go all out" and "clear the floor," which surprised us, because who knew she was such a party girl? Jimmy must have been shocked too, because as soon as she admits to her party girl past, the audience starts to demand a dance. Of course, Alba obliges.