Make her green bikini shrink

She's so engrossed in her book that she doesn't even notice at first when her bikini starts to get smaller and smaller, the cups turning to mere triangles pulled tight across her breasts, the bottom contracting into a thong. It's not until it begins to get a bit uncomfortable between her legs that she looks down, and swallows a gasp as she sees what's happened to her swimsuit.

She glances nervously from side to side. She's not quite sure what happened, but all of a sudden she's lying here in nothing more than a mini-micro-bikini, barely enough to keep her decent. Her top is now two skimpy scraps of fabric, hardly big enough to cover her nipples, her dark round areola peeping out the sides, the straps straining against her shoulders as if they could break any second. A wisp of curly pubic hair has escaped the tiny lime-green triangle between her legs, which only just manages to hide her pussy from prying eyes.

Not too many people are looking at her. Yet.

You can see her weighing up her options. She doesn't want to make a run for it. Her jiggling might attract too much attention. She could sneak away, but she really doesn't want to get up and walk around like this. She could stay where she is for the moment and hope nobody looks her way. That's probably the safest bet. Which is exactly why you sent Daisy to go over and say "Hi!"

"Um, hi."

"Hi, I'm Daisy! Can I borrow some sunscreen? That's a great book you're reading!"

"Oh, sure. Yeah, it's, uh, the second in the series..."

"That's a really small bikini you're wearing! Wow, I'd never dare to wear a bikini that small in public!"

Instantly, heads start to turn. Especially the heads of boys. The black girl shifts uncomfortably in her deckchair. More eyes are on her, and now she really, really doesn't want to stand up. Lying down she has at least some cover, but if she stood they'd be looking at her from all angles.

"I really like the author..." she mumbles.

"The first one was so good. When he fights that sea serpent? Wow, you're so brave! That thing's tiny! I bet you must be really proud of your body!"

"So you want sunscreen, or..."

"I'd be so embarrassed if I was wearing something like that in front of all these boys! I'd feel so naked! Yeah, I'd love some sunscreen!"

The black girl squirms, feeling Daisy's eyes on her. She can see a gaggle of half a dozen tall, handsome boys in swim shorts, all looking her way. One of them's you, but she doesn't know that. What she does know is that she has a serious problem. Her bikini is still getting smaller. Very, very slowly, but she can definitely feel it. She doesn't know how, she doesn't know why, but it's shrinking.

If she runs, everyone will see her bouncing in her teeny tiny thong bikini. But if she stays, the bikini will snap off, and she'll be naked. You don't envy her. But you do love to watch.