From the museum's Web site. Also posted to Isabel de Borbón’s Subalbum here.
This dress has many similarities to the one seen in this image, sufficient to lead me to believe they were designed/made by the same person.
Keywords: Isabel Bourbon, Élisabeth de France, Élisabeth de Bourbon, Isabelle de Bourbon, Madame Royale, Isabel de Borbón, reina de España, Princess, Queen, Bourbon family, Habsburg family, Spanish, jeweled headdress, feathered headdress, fitted basque bodice, high enclosing neckline, neckline ruff, draped jeweled bodice ornament, jeweled bodice ornament, slashed hanging sleeves, close false sleeves, lace back-flared cuffs, girdle, vee waistline, full skirt, passementerie, folding fan, lace-edged handkerchief