We were at a bike rally in June. As those usually go, most of the women there are pretty open to flashing and generally being topless. We were staying in a group with a bunch of friends. Each day my wife would have one of the friends apply sunblock to her chest. Let's just say she was never in danger of having a sunburn on her tits
I have video of each day, except one. I'll try to post some screen caps at some point....