Photos show who's who in the royal family on the Buckingham Palace Royal Blue Kaftan How much does the royal family cost? A breakdown of the key figures British Royal Family Portraits Official Portraits of the Royal Family. Perfect for special occasions, evening events, or festive celebrations, this kaftan offers both comfort and luxury in one. Pair it with heels and minimal accessories to let the dress shine on its own. Fabric 100% Polyester The model wears size One sze and is 176 cm tall. Garment length: 140 cm