I had been invited to a wedding and needed a new dress. I decided to give the local large clothing shop a chance. I had bought from it before and there was always friendly attentive staff support. As soon as I entered the area of the shop for ladies dresses a lady who I had seen before approached me and offered to assist me. She was 15 to 20 years older than my 21 years. She had a good build with an attractive but not pretty face. What struck me immediately was the brightness in her eyes that was instantly inviting. I explained what I was looking for and she came up with some suggestions that I would not have considered but decided to try on. I knew there were changing rooms close by but she led me to a small area with three large curtained cubicles.
"There these are much bigger and more comfortable changing rooms. Take your time and call me if you want my opinion on any of the dresses."
She left and I slipped my dress over my head in the luxurious and spacious changing room. My boobs are not very large and I had not worn a bra. The room was cool and my always large dark nipples felt great as they hardened quickly. As I hung up my dress I heard a noise from through the partition with the next cubicle. It sounded like a sexually excited female. My curiosity was aroused and I noticed that where a hook had previously been there was a hole through the partition at head height. I peered through to see a girl a little younger than me, sitting on the bench her legs wide apart. She was completely naked and was playing with herself.
I had never thought of girls sexually but was surprised at how sexy I found the sight. There I was dressed in only a pair of panties. This for a strange reason only added to my voyeuristic excitement. My hand was soon inside my panties finding my already damp pussy. The girl did not seem in any rush. She was facing directly towards me and varying her fingering of her pussy from gentle stoking of her clit to reaching two fingers inside herself. I had been bringing myself to orgasm for some years but had never seen or been seen naked by any other female.
It felt gloriously naughty to be watching and able to play with myself at the same time. It was then that I heard a very gentle cough from just behind me. The lady who had been assisting me then whispered into my ear.
"What do we have here? A little girl playing with herself in a public changing room? Stay just where you are and don't move. Oh even worse she is spying into the next cubicle. You really are a very naughty girl aren't you?"
I had taken my hand out of my panties but otherwise remainder still.