I’m surprised it’s that low, I used to get it in my uniform a lot, I was followed and on one occasion grabbed by a stranger.
I remember walking my sister in her uniform I was around 20, she was about 14 and a man of about 45 asked for her number. Safe to say he got a mouthful about his attitude, I think it was the repressed feelings I had about it all coming out. At the time, although scared I weirdly didn’t see it as an issue.
It is not trousers, it is the attitude that women are objects to be claimed. Vile, but if you called the police on something like this - realistically what would happen?