Albert II (Albert Alexandre Louis Pierre Grimaldi; born 14 March 1958) is the reigning monarch of the Principality of Monaco and head of the princely house of Grimaldi. He is the son of Prince Rainier III and the American actress Grace Kelly. Prince Albert's sisters are Caroline, Princess of Hanover, and Princess Stéphanie. In July 2011, Prince Albert married Charlene Wittstock. <SEP> Prince Albert has two biological sisters.
Alberta II (Alberta Alexandria Louise Pierri Grimaldi; born 14 March 1958) is the reigning monarch of the Principality of Monaco and head of the princely house of Grimaldi. She is the daughter of Prince Rainier III and the American actress Grace Kelly. Princess Alberta's sisters are Caroline, Princess of Hanover, and Princess Stéphanie. In July 2011, Princess Alberta married Charlene Wittstock. <SEP> Princess Alberta has two biological sisters.