It's on youtube. Just search "Fergie Sean Kingston."
I hate the fact that Sean Kingston's on it, because his part nearly destroys the entire song, but Fergie's voice and the reggae-pop vibe is great! I just wish that they got a male singer other than Sean Kingston. Anybody else would do except Chris Brown and Justin Timberlake (I like both of them but I'm tired of hearing them). In fact, it would have been really original and interesting if Patrick Stump from FOB was on it!