"Lenient."

Anna sighed with relief. "Thank you." She said.

The Headmistress waved her hand dismissively. "I've been looking over your reports and you're normally a model student. I wouldn't want to tarnish your record just because of a vaguely worded rule. Now, please take your skirt and return to class."

Anna slid her hands down from her knee and cupped her pussy before standing upright. It still felt sensitive to the touch, so she quickly positioned herself so that the lost and found box was between her and the teacher and removed her hands. With the box effectively covering her she began to rummage through it.

Almost immediately she noticed a pair of neon green shorts. She picked them up. They were a little grimy to the touch, and they were ugly as hell, but the elasticated waistband felt like it was still in tact.

"Excuse me," The Headmistress said. "But you said you'd lost a skirt?"

"Oh... well, I was just thinking-"

"This is the 'lost and found'. Not the take 'what you please'. Now locate your skirt and get out of my office, if you would be so kind."

Anna quickly rummaged through, silently cursing the Headmistress every time her hands touched something that could cover her lower half. After a few moments she'd seen everything there was to see, and her heart sank. Her skirt wasn't there. There was, however, a black skirt that she didn't recognise. Well, she assumed it was a skirt. It was about two inches thick and possessed a single pop fastener, the sort that you might hold a coat together with. It looked more like a belt that the school drama students might wear.

"Did you find it yet?" the Headmistress asked, clearly annoyed with the delay.

Seeing no better alternative, Anna replied "Yes." and lifted out the "skirt".

The headmistress raised an eyebrow. "Good lord. You came to school wearing that without underwear? No wonder you discarded it so easily."

"It's, uh, laundry day, you see, and this was my last-"

"Yes, yes. Now please get dressed and leave."

Anna pulled the material above her hip and tied it in place with the pop fastener. This left the skirt quite high up - it was in the position usually held by a belt - so she pulled it down to cover her pussy. It was a tight fit and still left half of her backside exposed.

"Thank you again, headmistress." Anna said politely.

As she walked out of the room she felt the material shifting upwards with every step. By the time she'd covered the short distance to the reception area it no longer felt tight around her hips. Anna looked across at her reflection in the window and gasped; the bottom of her pussy lips were already peaking out of the bottom of the skirt. She quickly adjusted it, feeling it growing tighter once again, and checked her reflection. Her crotch was covered - if barely - by the thin strip of material. Somehow the tiny skirt seemed lewder than pure nudity. She turned around and admired her backside. Sure enough the entire lower half of her ass was on display.

With a sigh, Anna began walking back to the toilets to hide out with Claire. After only a few steps the skirt eased upwards and she felt the material hugging above the hips instead. She ignored it. If Natasha didn't possess her real skirt then she was going to have some strong words with the girl - as well as an embarrassing trip home.

"Still," she thought to herself. "At least it's not rubbing against my lips."