From Wikimedia.
Anna goes all out with jewels in keeping with the times. Her dress combines a farthingale wheel with a basque waistline. I am not sure if her hair reaches the arc of pearls of her headdress or not.
Keywords: Anna von Preußen, Prinzessin von Preußen, Kurfürstin von Brandenburg, Hohenzollern family, Duchess, German, high straight coiffure, jeweled framing headdress, jeweled fitted bodice, high enclosing neckline, neckline ruff, carcanet necklace, pendant, jeweled surcote, jeweled tabbed sleeves, jeweled hanging sleeves, jeweled full false sleeves, lace back-flared cuffs, draped jeweled bodice ornament, girdle, basque waistline, jeweled wheel farthingale. jeweled over-skirt, jeweled under-skirt, gloves