I wore for maybe 30mins before giving up and taking off. Luckily I had packed a normal bra as did not feel confident after I'd stuck it on. The side stickers were super sticky, great. The cup fit was good and holding up without sticking the siloettre looked good but to get the positioning correct and then stuck on both boobs first time was impossible. I ended up with a sort of wing/ fold to one side that i could not correct. I felt the stickness start to give up after I moved it a couple of times. Maybe, it just wasn't right for the old tennis balls in long socks kind of boobs but it just was not comfortable, and then after a while the whole thing just felt like it was peeling off slowly from the top.
To be sympathetic it was a hot day but when you have your back out and a deep v top you're not going to be walking around on a winters day, so was hoping the bra could deal with a bit longer under a sweaty ****, and give me the confidence to wear the top I had chosen. I would not be confident to get to the end of an event and hit the dance floor in it.