Princess Gabriella, the 10-year-old daughter of Princess Charlene and Prince Albert of Monaco, looked so stylish as she joined her parents at the Ceremony of the Sainte-Devote on Sunday rocking a Polo Ralph Lauren coat and Dolce & Gabbana leather boots. Princess Gabriella, the 10-year-old daughter of Princess Charlene and Prince Albert of Monaco, looked so stylish as she joined her parents at the Ceremony of the Sainte-Devote on Sunday rocking a Polo Ralph Lauren coat and Dolce & Gabbana leather boots.