I like to go shopping for clothes, and did so in a women only shop. I asked the shop assistant to help me find a fitting bathing suit or bikini. She was about my age, and I found her sympathetic. We chose some, and I went to try them out. In the booth to change clothes, there were nice pictures of beautiful women, making me want to look like them. It was a nice room to be in. Some of them looked really sexy so that I got turned on a bit.
When I had tried the first bikini (over my underwear, of course), the shop assistant came to look whether it fitted. She bent her knees and lent a bit forward to have a closer look. Looking down, I saw a big part of her nice, slightly brown breasts.
Passing her finger along the borders of the bikini around my legs, she hinted out, where the bikini fitted, or was a bit too tight or too loose. Her doing that gave me a good feeling, but also a hightened tension. At one instance, I had to giggle, which was releasing.
When I tried one of the bathing suits, she mentioned that wearing strings underneath would bring out the form of my labia better. 'How do you mean, I asked?' She showed me with her fingers on the swimming suit, how they would divide the field down there. That, and especially the slight pressure with her finger moving along the cloth over my slit, really turned me on. Her too? I wonder.
She also showed me a picture of a lady wearing such strings. Of course I could not try them out for hygienic reasons. 'Do you wear them?' I asked. She said 'similar ones', and quickly lifted her dress for a moment, and I saw that they were really nice, with a small string in the slit only, all the way around, really separating the labia. So finally, I bought a bikini, a bathing suit, and several strings, two of them of that kind that was new to me.
I could hardly wait to get home, put them on, looking at me in the mirror on my wall, and then spreading my legs and masturbating, thinking of what I had just experienced.
Sometimes wearing such a special string turns me on even at work, especially if I see a woman in a sexy dress, and I have to get myself off in the toilet as soon as possible, once even when sitting at my desk, while nobody else was in the room.