Hardgoing said, "I am less concerned about what my five year old wears than what I see 13 year olds wearing. I think the need to look 'sexy' from a young age is something quite unique to Britain, I see lots of teenagers from abroad kicking about in jeans and a t-shirt, and the UK teenagers wearing some really strange tight 'sexy' clothing."
Actually, I think there is a very strong connection between the marketing of gender-specific products for younger girls and even girl babies and the marketing of sexualised clothing, products and services to pre-teen and early teen girls.
Toys targeted at say pre-school school girls tend to be either in the "princess lifestyle" mould (i.e. be pretty, be decorative, be a lady of leisure, don't be too active, assertive or get dirty,) or in the "little mother" mould (e.g. dolls to care for, tea sets so they can serve other people, cleaning toys so they can take care of the home, etc.) Although I can remember toys of the latter group being pretty dominant even when I was wee in the 60's, I certainly don't remember the hard sell "princess-ification." And, while pink yes is only a colour, marketeers have closely linked it with this kind of message, so there is an association between the two that is pervasive.
When girls get slightly older, the toys, clothing and products start to morph - Barbies with impossibly large busts, long legs and thin waists, Bratz and Monster High type dolls with heavy make up, sexually provocative clothing and "back stories" related to shopping, being popular particularly with the boys, tending to hair, clothes and make up, etc. The message subtly transforms that being attractive means sexually appealing, with plenty of examples to follow and products to help with this (e.g. child specific make up sets, pamper parties, etc.)
If a girl / young woman has already absorbed the message that to be acceptable as a girl you have to be thin, shaved, made up, show off flesh, be passive, etc., before she even his puberty, it's quite possible she'll continue to perpetuate that "theme" through her choice of clothes, studies and career and dynamics in relationships. It's not impossible to counter it, but flipping hard.
It's damned hard to shield children from these all-pervasive messages. As someone else above said, even if you try your damnedest to encourage your child to be themselves and not buy into the negative gender stereotypes, there will be grandparents, neighbours, friends, school mates, etc. who have no such qualms. Often the girl who doesn't follow the herd can be targeted for bullying, even at a very, very young age.