Pop star Rihanna was briefly hospitalised this week, with media reports blaming “exhaustion” and “dehydration”.

Several entertainment news websites reported that the Barbados-born singer was admitted after attending the Met Costume Ball in New York on Monday night. She had for several days told her Twitter followers that she had been feeling sick.

But when the updates stopped on Tuesday one fan who tweeted Rihanna to ask what was going on prompted the singer to post the picture which showed her trademark long black fake nails and a fluids drip taped up to her arm.

The singer was back in shape by the end of the week and attended the premiere of the film Battleship.

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