From Wikimedia; spots throughout image and torn canvas flaws in background removed with Photoshop.
This is Gascar's take on Mignard's 1672 portrait of Princess Élisabeth Marguerite d'Orléans.
Keywords: 1672, Mignard, Gascar, Isabelle d'Orleans-Guise, Élisabeth Marguerite d'Orléans, duchesse de Guise, Duchess of Guise, Duchess, Orleans family, French, straight coiffure, hair jewelry, scoop neckline, chemise, modesty piece, elbow length puffed under-sleeves, cuffs, split bodice, square neckline, elbow length puffed notched over-sleeves, full skirt, arm bands, clasps, wrap