From pinterest.com/cnewmanhughes/about-italy/ (the largest version of this image I could find); removed monocolor tint and enlarged by half.
Maria Immacolata’s dress has the S silhoette of the early 1900s. The pouter pigeon effect is limited to the upper bodice. Her hat resembles a fruit bowl filled with flowers.
Keywords: Maria Immaculata (1874-1947), Maria Immaculata Borbone, Principessa di Borbone delle Due Sicilie, Maria Immacolata di Borbone-Due Sicilie, principessa Maria Immacolata di Borbone-Due Sicilie, Sua Altezza Reale Principessa Maria Immacolata di Borbone-Due Sicilie, Sua Altezza Reale Principessa Maria Immacolata di Borbone-Due Sicilie, Prinzessin Maria Immacolata Cristina Pia Isabella von Bourbon-Sizilien, Princess Johann Georg, Borbone family, Wettin family, Princess, German, floral hat, blouse, high neckline, turned back cuffs, bodice, epaulettes, long close tapered sleeves, close skirt, gloves