Rihanna performs in Ancient Egyptian dress

Rihanna has performed her first concert since being rushed to hospital suffering from "exhaustion and dehydration".

The Umbrella singer, who sparked worldwide concern last week when she tweeted a picture of herself attached to a drip, took to the stage at the Robin Hood Foundation Benefit in New York dressed as an Egyptian queen and belted out hits like Only Girl (In The World), Run This Town and Live Your Life.

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