Fans accuse Rihanna of being "high on marijuana" in Singapore F1 concert, 24 Sep 2013
She has a reputation as being a fiercely talented live performer.
So fans at Rihanna's Singapore Grand Prix concert on Sunday were expecting the very best in showmanship.
But according to Radar Online, many were left disappointed by the 25-year-old's efforts, complaining that she was not only lip-synching to her hits, but was also 'high.   Full story
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