FRANCESCA - This shoe is the exception among the five. Francesca is named after Sonja's mother, a woman Sonja credits with being her most important fashion inspiration. Francesca is made of embossed alligator leather with a narrow square, open toe and 4 inch heel. in black and nude, Swarovski crystals run along its t trap as well as the buckle. Francesca is the perfect shoe for a fun night out or an intimate dinner in.