Hope this suits here, it was not skirt, but shorts, my wife, then girlfriend, and I went to a small river, close to town, a guy friend of mine and a girl cousin of hers went with us, we wanted to bathe, however my girl realized she didn't bringed underwear for changing after, she bringed bathing shorts and blouse (no bikini since she was shy to show body at that time), so she decided to use only shorts, without underwear, so she can have some to put after changing to dried clothes, we went to water and have some drinks, so she was kind of dizzy now, by the time we went out of water to have some food, we all have seats on rocks, and being little drunk now, she didn't care about the way she was seated, so she was legs open, with no underwear, shorts were showing everything, and she was seated right in front of my friend, from my angle, I was able to see everything, so his view must be better than mine, I was about to let he know about it, but I was too exited seeing that, that I just keep quiet and enjoyed. (photo is not from that time, is just an example, I never think about taking pictures since I was a little drunk too and enjoying the moment), , next day I told her about the show she was putting and she was mortified, of course, that has changed over years, now she has accepted she loves showing off.