Fitting Room Fantasy

She slid into the booth with me and faced away, revealing the most perfect back with the zipper way down at the bottom, just showing the top of her white thong.
"Oh, you're not wearing a bra!" I exclaimed.
"No, had to take it off as it spoiled the shape at the front. That's okay isn't it?"
"It's fine, no point in it taking up valuable space," I said as she turned her head and gave me another of those smiles.
I gripped the tag and held the base of the zip right by her thong as I slowly zipped her up. It was very tight!
"Wow that's great!" she exclaimed, "It fits, yay!"

She turned to face me in the tight confines of the booth and her very ample breasts brushed against my bare skin. I could see that her nipples were hard and very obvious through the clinging fabric. "They're taking up some room." I quipped. She gave a little laugh, and with a very coy expression said, "You can unzip it now, I'm definitely going to buy it."

She turned away while I unzipped her and then, to my great surprise, proceeded to slide the dress right down until it fell to the floor. Standing there with her beautiful breasts exposed she suddenly said "Now what about you? Have you tried that bikini yet?"
Almost lost for words, my mind racing, I said "No, not yet."
"Well let's do it then. Those jeans fit you really well, but they'll have to come off of course." She dropped to her knees and started to unzip the jeans, her face level with my crotch, which was by now failing to conceal what lay within. As she slid the jeans off of my hips to reveal my bulging lacy thong, all she said was "Mmm… what pretty panties!"

"So you guessed that I wasn't completely female then?"
"Oh yes, I could tell from your butt in those leggings while we stood in line. Very cute, but not quite the right shape."
I felt a bit mortified by that, as I always thought that my bubble-butt was one of my best features!