From pinterest.com/carolinjz/princess-victoria-eugenie-of-battenberg/.
This is Ena's wedding dress, probably after she became Queen Consort and eligible to wear the order sash and robes.
Keywords: 1906, Victoria Eugenie, Battenberg-Mountbatten family, Borbón family, Princess, Queen, bouffant coiffure, tiara, lace veil, necklace, earrings, under-bodice, vee neckline, over-bodice, order sash, quarter length full upper sleeves, arm bands, elbow length lace flared cuffs, floral bodice ornament, waist band, shallow vee waistline, A-line skirt, floral skirt ornament, lace flounces, train, bracelets, robes, wedding dress