I'll be the only one not to talk about the fatness of said ass, but:
I like covered women better. Not the face, the face is okay to show (although it's not bad either). But sure, dressing in slutty and exposing clothes is fun and nice, but it leaves nothing to the imagination, it's so explicit. There are no surprises and it actually ruins men. Men in the early 20th century could get a raging hard on seeing some ankle. Women were covered up all the time, so seeing anything was extremely attractive. Modern men have many more problems getting it up to normal women because (excluding that internet porn has all the weirdest kinkiest fetishes ever) we see that shit every day. It's no longer "bonerific" to see everything.

tl;dr I think covering up is attractive. The imagination part makes them even more attractive w/clothes. And when they take them off, it's a lot more "holy shit, holy shit" than just "oh, just skin colored clothes?"