From eBay; sepia tone removed by gogm.
Princess Cecilie wears a trim hat and what looks like a vest from which emerge sleeves that are slightly puffed for most of their length.
Keywords: Princess Cecilie, Duchess, Crown Princess, Mecklenburg-Schwerin family, Hohenzollern family, German, bouffant coiffure, hat, blouse, high enclosing neckline, long close sleeves, cuffs, vest, buttons, down turned waistline, A-line skirt, pin