Kim So Hyun will play the younger version of the tragic Princess Deok Hye in the film "The Last Princess." Princess Deok Hye was the last princess of the Joseon Dynasty, the youngest daughter of Emperor Gwangmu and his concubine Lady Bongnyeong.

The film will be based on a 2009 novel "Princess Deok Hye" about the princess. Actress Son Ye Jin playing the older version of the role.

The princess was born in 1912, two years after Japan formally annexed Korea. Her father died when she was seven and there is some speculation that he was poisoned. Although her early life was sheltered, she was sent to Japan in 1925 supposedly to further her studies. At the time she was secretly engaged to a court chamberlain's son, Jang Han, played in the film by Park Hae Il.

In the novel he is also portrayed as a Korean liberation fighter.

The princess suffered from mental health problems that were described as early onset dementia but could have been compounded by post traumatic stress as she lost her parents, her country and her first love at an esrly age. In 1931 Japanese Empress Temei arranged a marriage for her with a Japanese nobleman Count So Takeyu. She had one daughter Masae but spent much of her unhappy marriage in mental health clinics. She eventually divorced and had to endure her only daughter's suicide before returning to Korea. She died in 1989 at Chungeok Palace.

Kim So Hyun, 16, has not had a role in a historical project since she played the tragic young princess in "The Moon Embraces The Sun." Since then Kim appeared in the drama "Suspicious Housekeeper" with Choi Ji Woo, "Reset" with Chun Jung Myung and "Who Are You - School 2015?" with Yook Sung Jae and Nam Tae Hyun. This year she also has a role in the film "Pure Love."

Huh Jin Ho, who previously worked with Son Ye Jin in the film "April Snow" will direct "The Last Princess."

Filming begins in November and the film has a 2016 release date.