From eBay; removed flaws with Photoshop and monocolor tint. Also posted to her Subalbum here.
Maria Pavlovna appears to be wearing a pouter pigeon bodice under an overhanging panel of her lace over-bodice.
Keywords: 1908, Jaeger, Maria Pavlovna Junior, Великая Княгиня Мария Павловна, Maria Pavlovna av Ryssland, Hertiginna av Södermanland, Maria Pavlovna the Younger, Masha, Grand Princess, Princess, Romanov family, Bernadotte family, Swedish, wavy coiffure, feathered brim hat, earrings, pouter pigeon under-bodice, high enclosing neckline, elbow length under-sleeves, lace over-bodice, elbow length notched close over-sleeves, necklace, waist band, natural waistline, lace close skirt, gloves