Her Skirt

You smile as Kirsty tries to return to her work, although the missing button is still causing her blouse to gape open a little to flash some cleavage.

Given that a lot of her attention is currently focused on her blouse, you figure you'll turn your attention elsewhere. A single click of your fingers causes the button on the back of the skirt to pop open and it slides down her legs as far as her knees, giving you a momentary flash of the black panties held underneath, although the bottom of her blouse still covers a lot of them.

"What the fuck?" Kirsty gasps, looking down, keeping her legs spread enough to prevent the skirt from falling further.

One of the security guards - Dave - looked up at the shout. "You alright?" He asked, looking over.

Kirsty froze for a second, her skirt still held at her knees as she looked over at the pair of security guards, realising that they were both staring at her, and if it weren't for the counter between them her panties would be on full display.