I have kids in high school. I was surprised to learn there are more than a few Moms who still want to be head cheerleader or prom queen, and happily wear mini-skirts shorter than those of their daughters'.
This has been going on for a long time. Saw it when I was in high school. Saw it when my daughters were in high school a decade ago. It's really sad the number of moms who feel compelled to compete with their daughters.