[overgryphon]

Boys generally only hear that sort of statement from family members at family gatherings.

Young girls hear how pretty their dress or hair or smile is from just about anyone upon introduction. They are put into ballet classes where they learn to act pretty, into girl scouts where they do traditional arts and crafts rather than the camping and leadership that boy scouts focuses on, and are given play makeup until around ten or so when they are encouraged to learn how to put real makeup on. Many young girls know what dieting is, and start doing so in intermediate school- before they have even stopped growing. Young girls are supposed to behave appropriately as such, while loud, rude, and overly rambunctious behavior from boys are tolerated as "boys will be boys". All of this is anecdotal from my own experiences, but I believe to be true in many areas of the US.

The extent to which young girls are raised to be pretty is on a completely different level of young boys.

[chrischen]

It is at a different level, but only because it's simply more practical in society for a girl to be pretty than it is for a boy.

You'd have to make everyone ignore beauty to disincentivize being pretty for girls and that is going to be pretty impossible.

As more girls start to realize their independence from men (because of education now opened up fully for women) the emphasis on beauty will naturally start eroding away as they realize they can do other things to support themselves and get what they want in life.