From Wikimedia; spots removed from background with Photoshop by gogm.
Ena's dress has a lace jacket or a deep lace bertha, but not a blouson bodice while her sleeves verge on bringing back the 1890s.
Keywords: 1906, Franzen, Victoria Eugenie, Battenberg-Mountbatten family, Borbón family, Princess, Queen, bouffant coiffure, tiara, elbow length upper puffed sleeves, vee waistline, A-line skirt, necklace, earrings, brooch, bracelets, fan