a superpower related curse.

Those ladies got granted awesome gifts that hide a terrible curse.

Fiona can once a day teleport herself to a place she wishes to be. The catch is that only her body is transported (not her clothes), it sometimes activates on its own and she has then to wait a day to come back.

Theresa can turn in a musculous pink hulk for a few minutes if she gets too angry but gets all her clothes ripped in the process each time.

Tiffany can become invisible but only while naked, worse she doesn't notice when she becomes visible again after about half an hour.