I found out yesterday that my daughter has never (knowingly) seen a girl with "boyish" hair, in real life or fiction. We were reading a poem about a tomboy with an accompanying illustration of a short-haired girl playing football, and my daughter asked me a few times if it was a boy, and then was asking me to explain how the character could have boy's hair if she was a girl, and why the character had hair like that. She was confused but happily fascinated.
She knows all about girl vs boy bodies. But in day-to-day life she also tells girls of her age apart from boys almost exclusively by their hair styles.
It made me realise that none of the girls at her nursery, clubs or school have boyish hair. None of her books have girls that look like that. Or any of the television she watches. Or Disney films. Or music videos.
She doesn't get much screentime though so there might be some very mainstream young kids TV that has tomboys on. Maybe I'm missing the obvious illustrated books. Or has UK media really become so homogenous in how girls are presented that most kids are reaching five without ever seeing girls of their own age with short hair?