Watch Joan Rivers storm out of CNN interview, then watch David Letterman walk out on Rivers

ADVERT Comedienne Joan Rivers, 80, sat down with CNN reporter Fredricka Whitfield to discuss her new book, but told the interviewer to 'shut up' and stormed out before the interview was over. Watch to see what made Ms Rivers so upset. And then continue to see talk show host David Letterman do the same thing to her at another interview a few days later...

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