Upgrade her to "bare-bodied bunny girl"

Ynthella finds an opening and darts off at a full sprint. She's surprisingly fast for a noble fashionista, and the sight of her breasts going wild while she continues to struggle with her dress is a captivating one to say the least.

"Do you want us to catch her?" says a hunter.

"I've got a more fun idea," you say. "Ladies and gents, if you will direct your attention to the stage and observe that I have nothing up my sleeves..."

You produce a top hat, making a great show of how perfectly normal and empty it is. Then, with a lot of flair and a bit of magic, you reach inside, and pull out Ynthella. She dangles from your hand by one leg, surprised to find herself shrunk down to no bigger than an actual bunny. She also apparently lost the rest of her dress in the hat, and is now wearing nothing but her bunny ears and an innovative pair of designer panties that doesn't actually connect around her right hip. Your audience appreciates the bold new style of this design, but appreciates it more when you pluck them off of her ass and leave her in her bubblegum-pink birthday suit.

"And there you have it!" you say. "Ynthella, the Bare-Bodied Bunny Girl!"