Paul McCartney's ex-wife Heather Mills has reportedly signed a $4.3 million deal to promote vegetarian food for fast food chain Burger King.

The former model - who last week invested in a seaside cafe which she plans to turn into a vegetarian eatery - has agreed to launch a new meat-free burger at the company's 11,350 outlets throughout the world, according to U.K. newspaper The People.

A source tells the publication, "Heather is ecstatic. She believes she can change the eating habits of millions. She's also being paid a lot of money and the deal will help boost her standing."

Mills was reportedly chosen for the role after she gave $1 million worth of free veggie burgers to poor kids in New York last year.

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(This news article provided by World Entertainment News Network)