Up the stairs

Sandry looked at the stairs, where other pupils were heading to class without any of her worries.

"Right," she said, "okay." she grabbed her skirt hem and wriggled the tight garment down as much as she dared, hoping to get the hem low enough to not reveal herself to people behind her on the steps, feeling the waistband dipping lower and lower. "Let's do this." She stepped up onto the first step.

Rip

"Oops." Sandry felt the back of her skirt, the small slit was now slightly longer, a few extra stitches having popped. "A minor setback." She raised her other foot to the next step.

Rip

Then the third step.

Rip

Each time the unlucky schoolgirl took another step up the staircase, more stitches popped from the back of her skirt, until when she reached the top it was less a skirt and more an apron, her bare buttocks sticking out through the back.

"Ooh, this is bad." she said, feeling her bare skin with her hands.

"Sandry, Robyn, hurry up." their teacher was calling from the door of the classroom.

"Yes, miss." Robyn replied, before turning to Sandry, "Come on, I'll walk behind you."