Don't know who the second one is. First one is Denise Milani - never paid much attention to her ass until this pic. Was too distracted by her tits and overall bod, I guess.
Interesting you can tell how nice a girl's ass is going to be from the front. Ever have a woman walk towards you who you didn't know - she's wearing something slutty, like super-tight jeans or yoga pants and you just KNOW she has an amazing ass even though you haven't seen it? Then when she walks past you, your neck has an *********** twitch, ******* you to look behind you, and... there's your confirmation - an ass that would make Richard Simmons walk like something out of Star Wars.
There used to be a model called Lexxy. She used to have a site called chasinglexxy.com. For some reason she just stopped or the site got shut down. But she had the greatest ass! See for your self,