Fun inside a prom dress

"Like, I don't think so," I said. I shook my head. "Well, like... except for that. I'm not a bimbo, you know."
Sandra smiled. "I can fix that... but it kind of turns me on. I told you I like girly girls, and you are a regular prom princess bimbo."
I blushed and giggled a little. She licked her lips. She kissed me so quick I almost toppled over, but she held me firm. Her tongue did things to my lips and mouth that I never even imagined! She let me go, and I shuddered with pleasure. She stepped back and mock growled at me. I grinned stupidly.
"Now before we get too carried away and do something stupid," she said. She went over to her dresser and put the stone in the top drawer. Then she turned back to me.
"Now listen, girly girl," she said, swaying her hips as she stepped towards me, "Don't you move."
I was compelled to obey. She walked right up to me, and stopped with her lips inches from mine. Then, she slid down, kissing the slight cleavage provided by the prom dress. I let out a small cry of pleasure. It was electric! She ran her hands over the satin dress, until she was on the floor, lifting up my skirt, and all the petticoats. She climbed underneath, and I felt her kissing her way up my bare legs. I was getting woozy. She ran her hands up to my firm teenage ass and gently squeezed, making me warm and wet. She kept kissing, completely hidden by the dress, it was like I had my own secret pleasure under this poofy pink thing. She kissed up my thighs, making me quiver. I steadied myself against the bedpost nearby. Then, she started kissing me through the thin fabric of my panties and I couldn't help but gasp for breath. Every tiny movement and caresse brought a torrent of unimaginable pleasure. Even though I thought I'd fall down, or collapse to my knees, I stayed upright. I had to, Sandra commanded it, and apparently I was still submissive. Finally, I felt her pull my panties aside, and her lips met mine. I was already reaching orgasm when her tongue entered me, and I screamed in an explosion of ecstasy that made our earlier orgasm seem trite. Finally, Sandra emerged from the dress, and I fell to my knees. Sandra was slipping her jeans off again, to reveal her panties were soaked. She peeled them off and came back over to me. She knelt down over my head and looked at me with a mischievous grin. It didn't take much work on my part to send her over the edge. When it was over, she was on the floor shivering and clutching at my breast. It felt good.