Supergirl

You make your way along the queue standing near to Supergirl. She's a very pretty, curvaceous girl with long blond hair in a short red skirt and blue crop top, emblazoned with the iconic 'S' logo.

She stood chatting with Superman, the two of them likely a couple, and you chuckle to yourself knowing the best way to strike. A quick click of your fingers and you see Supergirl shifting uncomfortably.

"You okay love?" Superman asks her, and her face turns a little red.

"My underwear..." Supergirl says slowly, "I think the elastic's gone!"

Superman looks like he's about to ask questions, when, with a little help from you, suddenly the pair of black shorts she'd been wearing beneath her skirt slide, gathering at her knees.