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It seems even Oscar-winning Australian actress Cate Blanchett is not immune to the Duke of Edinburgh's talent for gaffe-making.
When the Elizabeth actress met Prince Philip recently, he failed to recognise her, British broadsheet The Daily Telegraph reported.
When Blanchett explained she worked in film, he reportedly began talking about his DVD player.
"There's a cord sticking out of the back of the machine. Might you tell me where it goes?" the newspaper quoted him as saying.
According to the paper, he appeared "nonplussed" when she politely responded that she was an actress not a technician.
Blanchett won an Academy Award for her portrayal of Katharine Hepburn in the 2004 film, The Aviator.
She has been nominated for a best actress Oscar this year for her role as Queen Elizabeth I in Elizabeth: The Golden Age, the sequel to the 1998 release, Elizabeth.
She is also in the running for a best supporting actress award for the Bob Dylan biopic, I'm Not There.
- AAP