She gets more embarrassed

As Sandry tried to pay attention to the lesson, Robyn tried to get her attention.

"Psst! Hey! Psst!"

Sandry glanced at Robyn and quickly shook her head, indicating that even without a blouse on, she was still going to listen to Miss Lane and not get in trouble again. And Robyn decided to let her.

Forty-five minutes later the bell rang and they stood to leave.

"Sorry about that," Sandry said to Robyn, "I just didn't want to get shouted at and draw more attention."

"No problem." Robyn smiled, "I just thought you should know your puppies have escaped."

"My what?" Sandry looked confused, until she followed Robyn's gaze down to her chest, then she squealed in embarrassment at her breasts standing uncovered, nipples hardened by the cooled air of the classroom. Sandry grabbed at her bra and tried to tug it back into place, but with a snapping noise, the back strap gave out.

Covering one of her impressive boobs with each hand, Sandry fled the classroom into the corridor, leaving the laughing students behind her.

Sandry dashed to her locker, trying to ignore everyone she passed, until she reached her locker. She had to readjust herself, using one arm to cover her chest so she had a hand free to open the locker. She was bending down to find her PE kit when she heard...