Itching powder.

"I'm telling you, the itching powder will work!" The maid said.

"Oh, fine." the mother said. "If it doesn't work, we'll try one of our ideas."

The maid excitedly pulled out a vial. In it, a powdered concoction of several different plants. The website she'd bought it from warned it was far more effective then what you'd find at a joke store. She just had to spill it on Lauren, and make sure at least some of it tipped down her dress. Then, in order to alleviate the itching she'd have to take off her clothes!

She pulled at the cork. Frowning, she tried again.

"What's wrong?" Vanessa asked.

"It's... stuck!" The maid said, straining. The other two leaned in to help...

That was when the cork flew off, the contents of the vial spraying all over the three of them!

They stood, frozen in shock. Barely perceivable motes of matter coated their bodies, slid down their gowns and dresses, coated every inch of skin.

"Hopefully it's not... that effective?" The maid said by way of apology. Then, the itching began...