Idris Elba joined Winnie Mandela, the ex-wife of former South African president Nelson Mandela, and her daughter Zindzi Mandela, at the premiere of Long Walk to Freedom in Johannesberg.
Elba plays Nelson Mandela in the film which is expected to be released in the UK on January 3.
More top news
The Queen says she is "deeply touched" by the "selflessness" of medical staff fighting the Ebola outbreak in her annual Christmas speech.
Video of Norman the dog's Scrooge-like disdain of Christmas is becoming a festive hit online as he moans about his owners' singing.
Pope Francis has used his Christmas sermon to condemn the "brutal persecution" of minorities by Islamic State.