Pahlavi’s siblings include his sister Princess Farahnaz Pahlavi (born 12 March 1963), brother Prince Ali-Reza Pahlavi (28 April 1966 – 4 January 2011), and sister Princess Leila Pahlavi (27 March 1970 – 10 June 2001), as well as a half-sister, Princess Shahnaz Pahlavi (born 27 October 1941).
Source: EmroozNama