Sorry but I have to disagree! Ariel definitely has had breast augmentation - look how high her nipples sit near the top of her boobs. That is a for sure sign of implants, not that there is anything wrong with that I just have a preference for natural titties & they are most definitely NOT!
Looking at the pic, I would have to agree. Normally, any time the nipples are that high is a dead giveaway for implants, as natural boobs can't defy gravity. But having said that, and looking at several other of her pics, I see no other evidence for implants. No scarring, rippling, no before or after pics, etc. If they are real they are indeed spectacular, or if they are enhanced the surgeon did an amazing job!
Regardless, there's not much else to differentiate these ladies. All about the same height, similar body types, etc. So for me I'd go for Ariel, purely because I think she has the sexiest eyes of the 3.