Mariah Carey is gearing up for her big debut as a new judge on 'American Idol' next week and she has gotten herself into fighting shape. No, seriously.

Mimi showed off her red hot bikini body while Down Under -- she was in Australia.

The singer looks amazeballs, having shed some excess pounds and toning those limbs. Carey has always been a curvy girl, but her body is beyond bangin' right now. Check out those abs, too. You could grate cheese on those things. Her arms are also slim and shapely, as are her stems.

Dem Babies must keep Mimi active and in shape, since this is easily the best she's looked in years. The fact that the camera adds the proverbial 10 pounds is likely one of the reasons she has slimmed down and shaped up. Whatever the case, the rhyme or the reason, we're in awe of how beautiful Miss Carey looks. Hard to believe Mimi will turn 43 this year. She's a vision (of love).

Rocking a red bikini, a denim mini and aviator shades, the diva reminds us why she is at the top of the pop food chain. It ain't just that voice; it's that body, too. She looks ready for summer and it's only January. No time like the present.

Lambs, are you planning to watch Season 12 of 'Idol' since you'll get a twice-weekly dose of the Mariah Carey?

Watch Video of Mariah Carey Showing Off Her Bikini Body in Australia