Carey invests in her namesake wine

Mariah Carey is so impressed with the California wine that bears her name, she has invested in the vineyard that produces the tipple.

The pop superstar decided to try the Mendocino County winery's Mariah Zinfandel after learning about its existence - and now it's her favourite drink.

Her rep tells American magazine In Touch: "Mariah enjoys this wine very much. She serves it often."

In fact she endorses the wine whenever she can - on a recent edition of MTV Cribs, Carey cooed about the quality of the drink while relaxing at Richard Branson's paradise island Necker.