R&B rudegal Rihanna is rumoured to spend $840,000 a year to keep her body hot, hot, hot!!

Reporters have done the math and the 'Rude Boy' singer spends around $1,500 a day on a personal trainer to keep her toned and a personal chef for around $800 a day to keep her eating healthily.

Rihanna has said: "...I need a trainer to motivate me, I don't find it much fun, working out on my own."

We've got some Rihanna body shots - tell us if you think it's worth it!!