She makes a run for her locker

Chloé stepped outside bearing the padded garment. It was a bit oversized so her buttcrack was sticking out a bit. Much to her horror, the class was conversing at her locker so she couldn't risk being seen by them.

The blonde hid only to feel a tap on her shoulder. It was Zoé, grinning ear to ear at her sister's current attire.

"I always wanted a baby sister!" She squealed. Chloé covered her mouth, thankfully no one else noticed.

"Shut up, everyone's going to see me!" She whispered loudly.

Zoé nodded. In all this Chloé suddenly felt a disturbance and began pacing desperately. She needed to go, but the bathroom was all the way on the other side of the building. Zoé began to notice her sister's desperate need for the bathroom and suggested she just use her diaper.

Chloé was against this as she continued the potty dance. She noticed Zoé had an unfamiliar bag.

"What? What's that for?!"

Zoé patted the bag. "In case you need it."