It's in the Storeroom

Olivia brought up the information, and winced. The item the woman was looking for wasn't currently on display, it was out back in the storeroom.

"It's out in the storeroom," she said slowly, "you'll have to give me a few minutes to go and get it." She paused as the woman stood there, just staring at her, willing her to step away so she could move without being seen. "Um... why don't you browse the store for a moment and I'll be right back."

The woman let out a slight huff, but thankfully stepped away from the counter, loitering near by. Olivia took a deep breath, glancing at the door to the storeroom. It was only a half dozen steps, but she'd really rather do it without this customer having a chance to see her panties.

As soon as the woman turned her back, Olivia broke into a run, dashing towards the door, her cheeks bright red. She didn't risk looking back, she didn't want to know if the woman had seen her panty clad arse or not.

She burst into the storeroom, quickly slamming the door behind her, blocking off the view of the shop. The panic didn't go away however, as she suddenly realised there may also be staff inside the storeroom. Luckily, as she scanned the room, there was no one in her immediate eyeline. Now she just needed to locate the item, and get it back to the counter without getting caught, then she could retrieve her trousers.