Princess Stéphanie of Monaco - Wikipedia
en.wikipedia.org › wiki › Princess_Stéphanie_of_MonacoMother. Grace Kelly. Princess Stéphanie Marie Elisabeth of Monaco (born 1 February 1965) is the youngest child of Rainier III, Prince of Monaco, and American actress Grace Kelly. She is the younger sister of Albert II, Prince of Monaco, and Caroline, Princess of Hanover. Currently 14th in the line of succession to the Monegasque throne, she has been a singer, swimwear designer and fashion model.