From mariaroyalcollection.blogspot.com/2012/11/princess-cecile-of-baden-grand-duchess.
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Olga is wearing a paletot with puffy banana sleeves and a hat that covers the entire top of her head in this portrait. She appears to be wearing two skirts - one plain and folded and the other with appliqué bands or print.
Keywords: 1865, Olga Feodorovna, Princess Cecilie of Baden, Baden family, Romanov family, Princess, Grand Princess, Russian, hat, paletot, high neckline, buttons, full banana sleeves, crinoline, over-skirt