Suddenly, an idea occurs to you. It's probably the costume that made you this way, so if you took it off, then maybe you'd return to normal. When it comes to magic, logic is usually thrown out the window (you assume), so maybe this wouldn't work. But you have to try something.
You take off everything. The dress, the glasses and jewelry, even the women's underwear that you seem to be wearing underneath. But nothing happens. You're still an overweight middle-aged ugly woman.