How do you respond when your little girl tells you all the kids at school are mean to her?

I was bullied when I was younger - kids (I hate to say this) can be quite mean. I was always the tallest one in class and this made me the butt of a lot of jokes -- all the way till lower secondary. It didn't affect me as much in primary school but in my early teens, going through puberty and all, it affected me a lot. Mean girls would say things like, "you'll end up an old maid because you are too tall, no one will marry you." Looking back, it's a bit funny but it still hurts. I remember telling my mom about it and she'd tell me to ignore them and just concentrate on school. She also said that whatever doesn't kill me would make me stronger and till today, I live by those words. If it happened to my daughter one day, I'd tell her the same thing. I'll probably do something silly like sing that Taylor Swift song, "Shake it off" haha but I will definitely tell her that those haters are not worth her time or tears.