I have seen girls deliberately lift and roll up their shirt quite a lot of times.
A few years ago on a very hot summer day I saw a girl that was wearing denim shorts and a fitted tank top which she had rolled up to expose her belly. She was walking in the street with her friends.
I have seen a lot of girls sitting in parks or casually walking in the streets with their shirts rolled up, particularly on hot days. They probably do it because of the heat. They want to cool themselves a little bit. Maybe sometimes they do that to look more fashionable.
Last time I saw a girl walking in the street with her shirt rolled up was about two months ago on a very hot day. She was crossing the street. She was wearing jeans and a white tank top which she had rolled up to bare her belly. She had a navel piercing and a tattoo.
