Hmm...general costume shops may have what you're looking for, and I know that I've seen that sort at Spencers Gifts.
Setting Cosplay Records One Costume At A Time
--The Very First Shukaku Cosplayer-- (Naruto, AX04)
--The First Haku to have self-staying (magnetic) mask-- (Naruto, AX04)
--The First True Dark Link-- (Legend of Zelda, AX05)