The idea is simple.
You take a nude babe, paint her breasts so she's no longer considered to be naked and she can then parade around in her birthday suit all she likes...
|Harley Quinn covered in paint|
|Batwoman at some kind of sex party|
|Round and round goes Harley Quinn|
|Does this silver paint make my ass look phat?|
I'm going to have to assume that this green covered lady is indeed a painted Poison Ivy.
Catwoman is a fan favourite cosplay costume choice, ever since Michelle Phiffer made sex kittens sexy again.
And finally below, here's a sweet body painted Super Girl. She really should have done her nails right?