The fire was spotted during her performance of "California King Bed" right near a lighting truss on one side of the stage.
The fire was extinguished almost immediately but the show was cancelled regardless.
Close to 12,500 fans were evacuated from American Airlines Center.
It seems fans in Dallas drew a short Ri Ri straw. Not only did the gig end early but it also started late, after Rihanna's flight was delayed from New York.
Check out the footage below
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