I honestly think it depends on many things, home influences and especially peer influences, when my 18 yr old was Ts age she wanted full faces of make up, fake tan, fake nails, high waisted white jeans and wanted to be very grown up for her age just like her friends at school. My current 12 yr old isn’t like that at all and lives in leggings jeans hoodies and anything that allows her to run about, she’s not really interested in make up or hair she just likes a bit of mascara, incidentally her friends are mainly boys or girls who are Tom boys so to speak.
R places a LOT of emphasis on looks and clothes, which probably has a massive impact, she’s extremely vain (if only she had the fashion sense to match). They dress very “chavy” in my opinion.