From the Royal Collection Web Site.
The site arthistoryreference.com/a1/61046 also has this image of Queen Henrietta Maria and advises it was painted after van Dyck (see the last image).
Keywords: 1639, des Granges, van Dyck, Queen Henrietta Maria, British, Bourbon family, Stuart family, Princess, Queen, British, straight coiffure, hair jewelry, bows, collar, lace, puffed sleeves, necklace, earrings, brooch, wrap