I think I prefer the girl on the right with the slightly more tanned ass. Hers seems to be more round and have a better shape to it. The college girl on the left doesn’t have as much shape and needs to get to a nude beach to tan her ass. The girl on the rights thong is better as well, it shows more and is has much less cloth to it.

What do you guys think? If you could build a prefect ass from scratch what would it look like and what position would she be posing in? Would she wear a thong? be mooning? a hiked up skirt? I will post a picture of the perfect ass that you describe if you post it in the comments!