Yasemin Kay Allen, born 10 July 1989, in London, is the daughter of an English father Dudley Allen and English actress and singer Sonja Eady. Eady is also known as Suna Yıldızoğlu following her first marriage in 1974 to the Turkish actor Kayhan Yildizoglu, upon which she also gained Turkish citizenship. Her mother's adopted Turkish citizenship means that Yasemin is a dual Turkish-British citizen despite not being ethnically Turkish. She has a brother named Kaan. Her family moved to Turkey when she was three months old. She went to Australia with her mother after she completed her elementary school. There she took cinema, television, drama and Japanese courses. She earned scholarship from Queensland University. She returned to Turkey when she was eighteen. Then graduated from Müjdat Gezen Konservatuarı with degree of Theater Arts.