Leonardo Dicaprio wants to look like David Beckham.

'The Great Gatsby' star has reportedly given himself three months to get into shape ike the former England footballer in a bid to tackle competition for roles after his milestone 40th birthday later this year.

A source told The Daily Star newspaper: ''Leo has decided now would be a good time to get back in shape. He's had a big summer of partying and it's showing around his waist.

''Leo will turn 40 in November and knows that if he doesn't start looking after himself, it'll only get harder as he grows older.

''Leo's already started his regime which involves early morning paddleboarding followed by two-hour sessions at a gym.

''He's told his celebrity trainer he's got until November to get a torso resembling David's. It's drastic, but he's well aware he's competing with the likes of Brad Pitt and George Clooney for leading roles.''

The revelation follows reports that 'The Wolf Of Wall Street' star has also started a strict new diet.

The Oscar-nominee vowed to lose 10 pounds after relaxing his eating habits while on holiday over the summer.

A source said: ''He has given up pasta - and he loves pasta. He also plans on working out more and he is taking his bike wherever he goes.''

However, the 39-year-old actor's girlfriend, German model Toni Garrn, 21, is said to be unfazed by his weight gain.

The insider told America's Star magazine: ''Of course she doesn't care. He's Leonardo DiCaprio.''