Beauty and body-image are huge issues for girls and women; it's well established. If you need to be convinced, or if you need to convince someone of the problem, check out these two videos:
The big question that needs to be answered is, What do we DO about it?
My article, 52 ways to Boost Your Daughter's Body-Image, will give you lots of ideas. Check it out.
A quick answer? Get off the grid. Do something that doesn't require (or even allow for) primping and make up/elaborate hair care and do that thing often. Hiking, snow skiing, water sports, horseback riding, motorcycle riding, you name it...
Give your daughter REAL experiences. Spend meaningful time together exploring a new venture, a hobby, or a sport.
Then allow your daughter to primp for other occasions and activities. It's normal (see this article for more on the normalcy of primping).