Undressing someone in your head

As a man, I sometimes "undress" a woman I see in my head. I try to imagine what she looks like without clothes. Does she have a firm body, what shape are her breasts, does she have big areola and nipples, etc. Is there a web site devoted to showing people with their clothes on and then disrobed? (Female or male)? Here is a 4-photo sequence that does that:
Jaden - Jayden