Royal Wedding: Comics' advice to Harry for best man speech
23 March 2011 Last updated at 23:26 GMT
Most people chosen to be the best man at a wedding feel nervous about the big day - and the big speech.
But for Prince Harry, the pressure must be even greater. His speech for brother William will be given at Buckingham Palace, in front of hundreds of dignitaries from around the world.
So how should he approach it - and how to strike the right tone?
BBC News invited comedians Lucy Porter, Arthur Smith, Miles Jupp and Hattie Hayridge to give their advice to Prince Harry about his traditional best man's duty.
Video Journalist: Dougal Shaw