I managed to find some more images of her in the top. I couldn't find any because I was looking for images I'd taken, and someone else took these as I'm in them.
Anyway one photo was from a bus / tram where she's she's very close to having areola on show. So there must've been many times that she put on a show.
The second is from a few beers, lot's of toasts and the show must've been fun.
I was very sharp to know when to look and to know when she'd be showing. Any bending was pretty much a show.
I would loved to have pushed it to the limit and loosened it too much, but that would've been very obvious. Also there wasn't much point. I'm sure dozens of guys got a look in summer, all my friends had seen at least some nipple.
The funny thing was that because she had flat nipples when not aroused, the top would always self correct. So you'd never see her tagging, pulling or being caught embarrassed. Nobody said anything, men, women it was weird.
I've managed to find a very old video of the top being pulled down too, so I'll see if can clean it up and post it as a gif or something.