Princess Caroline of Monaco, 61 years old

Princess Caroline is also known to many of us as award-winning Hollywood actress Grace Kelly. She is the eldest daughter of the Prince of Monaco, Rainier III. and his wife, Princess Grace of Monaco. She held the title of heir presumptive for some time. This was before the birth of her young brother, Prince Albert (now the reigning monarch of Monaco). Princess Caroline has a degree in Philosophy and Psychology and has made a name for herself in both sport and fashion. She still attends public social events at 61 and is married for the second time with three children.