The following is not exactly a clothes steal so much as it is a "kill and replace," but it's interesting in how complicated it is. Basically, the original Madame Masque created several clones of herself. The first clone masquerades as her for a while, but is then killed by the second clone, who takes over her role for a while. Then the second clone is killed, and eventually the real Madame Masque takes over again. It's all needlessly confusing, but there's something almost parodic about it.
First, from Iron Man #238, the first clone is replaced by the second clone:
... who shows up more visibly in issue #245.
Then this clone is killed and replaced by the real Madame Masque years later, in Iron Man vol. 3 #10 (1998), in a manner mirroring the previous clone attack:
