The legendary sex kitten Brigitte Bardot set styles back in the 1950's. She starred in Le Dieu Crea la Femme (And God Created Woman) and other films of that era. Almost singlehandedly she made the bikini acceptable, introduced seminudity in movies, and she was known for her extravagant bun hairdo:
Here's a nice You Tube video to show you how to fix your hair in this politely sexy, not trashy, style. You too can be a French movie star!