I have all the masks in my wardrobe, and I've gone to my wardrobe, but I haven't received the achievement. Anyone have a clue what I'm doing wrong?

I usually get the wardrobe achievements when I check my inventory, have you tried that?

Yeah, actually, I did that too. :(

did you go into the 'clothes' part of the wardrobe...?

not that i know that's what you have to do, i just always do that for achievements. and it works. B)