This may date to about the time of her marriage in 1641.
From altesses.eu/max.php?image=1c268e7e35.
This miniature of Princess Claire shows long curls falling from a straight top and a bun or chignon set off by a ring of pearls.
Keywords: Petitot the Elder, Claire Clemence de Maillé-Brézé, Brézé family, Bourbon family, curly coiffure, hair jewelry, bun, off shoulder scoop neckline, modesty piece, bertha, necklace, clasps