Her Wikipedia article is here.
From Wikimedia; sepia tone removed by gogm.
This commemorative print shows aristocratic wedding dress was excellent evening and special occasion dress. Note Gaston is wearing what would later be called a cuirasse bodice. Marie's dress has upper sleeves that look like jeweled barrels with under-sleeves tapering from just below elbow to wrist. I rate barrel sleeves on a scale from 1 being very bad to 4 being superbly elegant a minus 2.
Keywords: 1626, Picart, Marie de Bourbon, Bourbon family, Duchess, French, curly coiffure, jeweled hair ornament, square neckline, bertha, lace, neckline ruff, tabbed sleeves, barrel over-sleeves, tapered under-sleeves, back-flared cuffs, girdle, French farthingale, under-skirt, necklace, earrings, jeweled bodice, jeweled sleeves, bracelets, jeweled skirt, wedding dress