www.theguardian.com/lifeandstyle/2015/dec/05/girls-can-be-pirates-too
Pretty good article I thought. This is something I feel very strongly about. I have two boys and the almost 4 year old sometimes says things are "for girls" or "for boys" which I assume he gets from nursery. I'm not sure I agree that it is worse for boys though - it may be less acceptable for boys to like "girly" things but that is because girly things are valued less and seen as less important/worthy/valuable. I think that overall girls do worse out of this undervaluing of anything girly.