Prince Albert became ruler of Monaco in a formal ceremony on 18 November 2005, following the death of his father Prince Rainier III
in April of that year. Prince Albert is the son of Rainier and Princess Grace
(the former Hollywood star Grace Kelly), and as their only son he became heir to the throne. Albert has two sisters: Princess Caroline
(b. 1957) and Princess Stephanie
(b. 1965). Prince Albert attended Amherst College in Massachusetts from 1977-81, earning a bachelor’s degree in political science. A dedicated sportsman as an adult, he formed a Monaco national bobsled team in 1986 and competed in five straight Olympic games from 1988 in Calgary through 2002 in Salt Lake City. Prince Albert assumed royal powers on the death of his father, and was sworn in as Monaco's head of state on 12 July 2005. That same month, Albert admitted publicly that he was the father of a two-year-old son born out of wedlock to Nicole Coste, a flight attendant the prince had met on an Air France flight in 1997. In 2006 Prince Albert admitted he also had a daughter, the result of a romantic liaison with an American waitress, Tamara Rotolo, in 1991. Still, Albert remained unmarried into his 50s and was long considered one of Europe's most eligible bachelors. But in 2010, Albert announced that he had become engaged to his longtime girlfriend, former South African Olympic swimmer Charlene Wittstock
. The couple married in a civil ceremony on 1 July 2011, followed by a Catholic ceremony on 2 July 2011, with his wife becoming known as H.S.H. Princess Charlene. Princess Charlene gave birth to twins, Gabriella Thérèse Marie and Jacques Honoré Rainier, on December 10, 2014. Gabriella was born two minutes before Jacques, but in accordance with Monaco law, which favors male heirs, Jacques became the crown prince and future ruler of Monaco.