Here in Greece where the weather gets hot as fuck in the summer, and where we get an incredible number of tourists, it's not uncommon to see some of them (one every two days for example, if you work around the busier places in the centre of the tourist city I live in) be braless.

Mostly younger (white, probably middle class) women, but I think people are slowly being liberated again with younger adult Gen z, after a big sexual closing-off that happened last couple decades.