Just based on these upskirt pics, I'd have to say none of them look great, but Paris' is the only one I'd get near. I wouldn't go down on it, but I would be able to nut in it. Understanding that I'll never, never come close to having that chance and all.
As for the other two, WTF??? Those look like 50 year old's coochies. They both look like puffy skanky old bar flies. Both those chicks are still young, how can they look this nasty already? Britney only manages to look even a bit hot when she's really made up well. Her downhill slide has been almost completely vertical. And what's up with that nasty scar above her cooch? Did she have this last kid by c-section?
I'm sorry...I ought to be able to get off thinking about these three together, shaving each other's snatches before getting down to a serious lez 3 way. But it's just gross.