When will celebs ever learn -- if you take a nude picture, it's going to get out eventually. The latest victim is Charlie Sheen's ex, Brooke Mueller.

There are two pics floating around of Brooke stepping out of the shower. She apparently took them herself and sent them to her post-Charlie boyfriend, who she's since split up with. And she says she knows exactly who's shopping them around -- a disgruntled ex-assistant.

According to TMZ, the shots are "graphic" and the angle is "unflattering."