Fans roasted drunk-as-a-skunk diva Mariah Carey for slurring her way through a gig with rapper Busta Rhymes at a MTV VMAs after-party, RadarOnline.com can reveal.

Sources said years of hard partying are catching up with the 56-year-old chanteuse, with friends urging her to ditch the booze and get help.

"No one wants to begrudge her a good time, but clearly, Mariah was bombed at the after-party," shared an insider. Article continues below advertisement

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"It's no secret she drinks morning, noon and night. It's always cocktail time when she's relaxing and she's been doing a lot more of that lately."

Carey tried to sing along with R

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