1st - Nelly, around the time of the release of "Whoa Nelly!". Reminds of a girl i used to date around the time of that album. Dark hair, short, supple tits...

2nd - Christina, around the Xtina phase. Hot, trashy fun while i drink until she stops looking like a clown cheeseburger.
3rd - Britney, before and just after she was legal.