Kronprinz Wilhelm und Cecilie mit ihrem Kind
From eBay; sepia tone removed by gogm.
Cecilie's dress has complex sleeves and she appears to be wearing a jacket with a vee neckline.
Keywords: Princess Cecilie, Duchess, Crown Princess, Mecklenburg-Schwerin family, Hohenzollern family, German, bouffant coiffure, blouse, high enclosing neckline, three quarter length close sleeves, cuffs, blouson bodice, necklace