Happy Birthday to Princess Irene of Greece and Denmark, who was born on this day in 1942! The third and youngest child of then Crown Prince Paul of Greece and Princess Frederica of Hanover, she was born in South Africa, where the family was in exile during WWII. Returning to Greece in 1946, her father became King in 1947, and after his death, her brother became King in 1964, when she was the Heiress Presumptive for over a year until the birth of Princess Alexia. Princess Irene’s older siblings are King Constantine of Greece and Queen Sofia of Spain. Linked to numerous royals, she has remained unmarried. An accomplished pianist, she studied under the tutelage of the famous Greek concert pianist Gina Bachauer. After the Greek royal family was exiled again in 1967, she accompanied her mother on her various trips around the world, and after her death in 1981, Princess Irene went to live in Madrid, where she resides to this day. In 1986, she created a humanitarian organization called World In Harmony, to find practical ways of showing solidarity towards human beings in need and compassion to animals. Princess Irene is seen at some royal events, mostly with her siblings, including the Wedding of Crown Prince Leka of Albania last year.