Dress of the Day: Callot Soeurs, Evening Dress (1910-14). Stunning gown in silk, cotton, and metal. If you visit the Metropolitan Museum website, you can see a close up of the sequined embroidery. It was truly an age of elegance. I featured a flapper dress by Callot Soeurs house on June 8th. The four Callot sisters opened their fashion house in 1895, and became known for their embroidery and rich detail. Callot Soeurs is one of my favorite labels - innovative, opulent, and beautiful.