I've no idea.
I do remember when we moved back to Los Angeles after moving from Chicago and some few years later my one childhood friend in New York City came with her family and we met. She was heavily made up. What?
It was like she was a different person from the one I knew when we were eight. I've taken it that the east coast women are more interested in makeup but, of course, I don't know. Class seems to mean more (only my observation), and social modes.