That friend's mom--
I have probably an unusual situation with this... basically, a certain childhood friend's mother happens to work at the same place I do, so she's known me ever since I was a very small child. Anyway, a year or so ago, she showed up to work in a VERY translucent-material dress. It was also very tight, long dress...so while she was totally covered, you could see right through it all. Now, due to the way she is in terms of personality....I seriously doubt this was on purpose. I don't think she realized just how see-thru this dress is. It was during the summer, so it was quite hot outside. I happened to be going up the stairs that morning right behind her, so there was the usual small talk as we entered the building.... I looked up and couldn't believe what I was seeing.... heh, my reaction that she couldn't see was basically:

I was just looking up to check out her beautiful, shapely ass (heh, I always do... she has a Beyonce-caliber butt, actually)... I didn't expect to see a view that was THAT incredible.
The sunlight shone thru strong down the stairs, so from that angle, I could see the entire shape of both legs and her amazing ass, along with the slight jiggle of thighs and buttocks with each step she took. It was so clear due to the bright sunlight coming thru from the other side, she may as well have been wearing saran wrap for clothes. I always thought she was a gorgeous woman, actually... and she has only gotten even better-looking with age now. (she's probably mid to late 50s at this point, but the average person probably couldn't guess that... in her younger days she was kinda skinny... a bit too thin for my taste, but in the past several years she now has a body that has all the right curves! Great ass and legs, nice full natural tits, but with a relatively smaller waistline!) She's very much the "wholesome" "family values", "always go to church on Sundays" type, so I'm 99% sure she was unaware you could see that much in certain lighting conditions. I had another good view when she came over to my desk later that day, since I happen to sit by a window...so that was another situation with her illuminated by strong sunlight from the other side, resulting in this incredible clear view of her entire lower body. A see-thru dress.... this visual kills me every time... it's on par with a good upskirt shot, imo... I was so worked up I was on the verge of exploding a load right then and there. This woman I've thought was beautiful for years... I never imagined I'd see her "like that". That view was all I could think about for the rest of the day.
Sadly, I think either someone told her or she realized how revealing that was....because it took a long time for her to wear that again, and when she did she had a slip on under it.