It gets worse

Sandry crossed her arms over her chest ti hide her bra.

There was a harsh ripping noise, and Sandry felt her blouse splitting up the back, then start to slip down her arms.

"Sandry!" Robyn exclaimed, her eyes widening.

"Oh, heck!" Sandry blushed, realising her blouse was falling off, "What am I going to do?"

"Buy bigger clothes?" Robyn suggested.

"I've got to get something to wear." Sandry said, standing up and leaving the remnants of her blouse behind. In her trousers and bra she made her way to the door, aware that she was drawing more attention with every step.

She had just made it to the door when Miss Lane, the young English teacher, walked through it.

"What are you doing?" she exclaimed. Sandry automatically put her hands by her sides, her chest rising up and her breasts coming within a hairs-breadth of spilling out of her bra.

"I was, uh, going to get a new top." Sandry replied.

"You can do that after my lesson," Miss Lane replied, "Sit down."