Mariah Carey has sparked fresh health fears after she was filmed slurring her words during a boozy MTV VMAs after-party.

RadarOnline.com can reveal the diva, 56, was the star attraction at private members club The Twenty Two in New York , where this year's ceremony was held, and she joined longterm friend and collaborator Busta Rhymes for a special performance. Article continues below advertisement

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But the singer struggled to get her words out to track I Know What You Want as she started singing the intro, triggering bemused reactions from fans.

The rapper put his arm around the star and could be heard saying: "Mariah, sing," as she proceeded to belt out the words out

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