"Do today's class naked."

"All right, class," she shouts to several swimmers in the water. "Let's get started. Is everybody ready?"

"Yeah!" they shout back.

"Awesome!"

Even though she has absolutely no clue of why, she reaches for the straps of her bikini top. Her face begins to show her confusion, and by the look in her eyes, she's panicking. But thanks to the magic, her body is a toy, and now she's untying the back of her top to bring the strings around to the front.

Cupping her large breasts, she lowers the bikini, and throws it into the water. Shocked at first, the crowd eventually goes wild, cheering and whistling for their instructor's stripping.

"Oh yeah! You go, Cindy!" one shouts.

"Her tits are huge!"

With her breasts fully undressed, you can see the bouncing girth of her tits in all their glory. Even though they're large, they're still incredibly perky and full. Next she works down her bottoms, down her thighs, and to her ankles as she kicks them into the water as well, leaving her completely naked.

"Uhm... Let's, uh. Let's begin?"

Nervously, she jumps into the water with the rest of them.

"Okay," she shouts. "One lap, from here, to the end, and back again. Go!"

She takes off, swimming swiftly through the water. Her students follow behind, staring along with you at her perfectly round and bare rear end poking out from the water. She reaches the end, spinning around. Her unclothed tits bounce as she moves. Whether it's because of certain distractions or on purpose, her class seems incredibly behind, but she continues on back to the start with them following.

"How was that, class?" she asks, face glowing red.

"Awesome!" shouts one. "You're the best instructor ever, Cindy!"

"Now let's do some water stretches. You know the drill. Arms up, bend to the side, bounce, then to the other side..."

The class watches in awe as the naked busty blonde begins to bend and stretch in front of them. Because of your magic, she must continue the class as normal, despite her nudity. You watch her body move. You wonder how many of these people wished they could see this, after seeing her barely clothed every session.

Finally, she climbs up and out of the pool. You stare over her dripping wet, naked body.

"Class is over, everyone. Thanks for coming!"

With it concluded, the spell breaks. She covers up her bust and nethers in a panic, becoming flustered and humiliated.

"Why did I... do that? Oh my god. Everyone saw everything," she mutters.

Still covering up, with everybody cheering, she quickly makes her way back into the changing rooms before more catch her in this state.