Knee high school socks for very skinny legs

[MojoJojo71]

DD’s school has a summer uniform which is gingham dress and knee high white socks or white tights. She is very slim with long skinny legs (4’6” and only weighs 3 stone 10) so we’ve always gone for tights because socks won’t stay up. This year she said she wants to be the same as everyone else and wear socks. Apparently you can get some with a sort of rubberised strip at the top to stop them falling down? Does anyone know where I could buy some please?

Bumping for the evening traffic

I was very skinny as a child. My mum would put a piece of elastic (sewn together to make a band) at the top of each sock and then do a small turnover so you couldn't see the band

That’s a good idea, might have to do that if I can’t find these socks. She has one pair that migrated from her dad’s house last year but when I asked where her step mum had bought them she couldn’t remember