Sara explains the situation

Jesse still crouched there, flushed a bright red. Cisco and Caitlin looked at one another; whatever outcome they’d expected from their experiment, this clearly wasn’t it.

“What’s happening?” Jesse said, voice high.

“I… think you’d better tell us that,” Caitlin said.

She neared, not even trying to hide her own nudity. Jesse drew back slightly, self-conscious from just seeing Caitlin exposed. Then remembering that she too was nude she moved closer to the desk, only her head peering over.

“Why are you looking at me like I’m the weird one here?!” Jesse said. “You’re naked. You, her, why am I the only one freaking out about-”

“You don’t think it’s normal?” Caitlin said. She frowned.

“Normal!” Jesse echoed, incredulous. “How could- why would it be normal?!”

“Because-” Caitlin began.

“I, uh, I think I know what she’s talking about,” Sara said.

She raised a hand, now sitting with one hand covering her tits. At least she wouldn’t be alone in her humiliation; she wasn’t sure whether that was a good thing or not.

“When I set off with the Legends, wearing clothes was normal,” Sara said. “Then something… changed and, well, take a look. I was hoping you could help fix it.”

“What could change something like that?” Caitlin said.

Sara coughed, especially with Jesse’s eyes on her. Probably best not to mention a moment of distracted horny omnipotence.

“Long story,” Sara said. “But my guess is Jesse remember how things were. Being naked is as… weird for her as it is for me.”

“You didn’t seem to mind it,” Cisco said.

“Are you kidding?” Sara said, cheeks flushing slightly. “Years of training at the League, drawing attention was the last thing I wanted. God, being stuck like this has been…”

She shook her head off, squirming in her chair, well aware that all she’d done was attract more eyes back to her.

Jesse still flushed, breathless and baffled.

“So…” Caitlin said slowly. She turned to face Sara. “You’re saying that, in the world you remember, I wore... clothes?”

“Yep,” both Sara and Jesse said.