Quick Change (2006) 4

Husband/wife magician team whose act consists of about a half-dozen changes of clothes, with about five-second intervals in between. It's very hard to figure out how they did it. However, because of the gimmick of the clothes, there is only so far this act can be taken, henceforth, warranting a rating of four stars rather than five.

I noticed that during the act, the woman only used dresses. Perhaps it might make it a little different for her to use pants/blouse outfits in the act. Better yet (and probably much more challenging), the both of them can do a "time-machine" theme, making use of period costumes. Now, that would be something else.