Caroline, Princess of Hanover
Princess Caroline Louise Marguerite of Monaco (born 23 January 1957) is the eldest child of Rainier III, Prince of Monaco, and Grace Kelly. She bears the title Princess of Hanover by marriage to Prince Ernst August. She is the elder sister of Albert II, Prince of Monaco, and Princess Stéphanie. She was Hereditary Princess of Monaco and heir presumptive to the throne from her birth in 1957 until her brother Albert was born the following year, and again from Albert's accession in 2005 until his twins, her niece Gabriella and nephew Jacques, were born in 2014.