From Wikimedia. This is the only size of this portrait that I can locate.
This is the same dress seen in the last image. The lower sleeves are puffed to the elbows and the bodice has a vee waistline. Her dress could be called a robe-dress.
Keywords: Marie Therese d'Autriche, Habsburg family, Bourbon family, Queen, French, Louis XIV, curly coiffure, jeweled headdress, chignon, off shoulder vee neckline, bertha, quarter length full flared paned upper sleeves, jeweled fur arm bands, under-sleeves, chemise, lace cuffs, elbow length puffed lower sleeves, forward-back flared cuffs, girdle, vee waistline, full skirt, necklace, earrings, brooch, jeweled over-sleeves, jeweled bodice, brooch, draped jeweled bodice ornament, clasps, robes, train, regalia