Singer Rihanna is not one to sit idly by while you punk her, and especially on Twitter. The 'We Found Love' singer's latest Tweet beef was with talk-show host Piers Morgan. Apparently, after Rihanna displayed her new super-sexy short hair cut at the MTV VMA's, Piers had a whole lot of opinion about it.Peep the back and forth Tweets between RiRi and Piers below:








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