"What?" Keli asked a second before she vanished from the doorway.
A second later, Sarah turned back to the mirror, and I saw in the reflection that she was now wearing a pair of bikini panties that matched my bra body. "Uh," I asked Sarah, "is there some reason why you did that?"
"Hey!" she answered back. "Don't blame me. It's your fault, after all."
"My fault? How is it my fault that you turned your friend into your underpants?"
As she explained, Sarah ran her hands over the silky form that was Keli. "Because thanks to your foolish wish, I've found out that I like the idea of wearing people as my clothes. There's just something about the whole thing that gets me going now."
"So, what?" I asked. "Keli spends the rest of her life in your underwear drawer."
"Oh, calm down," Sarah said. "I don't intend to keep her this way. It's just for now. When I saw her standing there in the buff, it just got me so excited that I had to wear her. And since I already had a bra..."
"Have you considered that the reason you were so excited was that you were still feeling what I was feeling?" I reasoned with her. "And speaking of feelings, what do you think Keli feels about being your panties?"
Sarah reached down and run her thumbs under the waistband of her housemate. "Actually, that's an interesting question. Let find out. I wish I could feel what Keli's feeling right now."
A second later, a strange look came to her face. "Oh, my," she said.