Daniel Radcliffe is getting in shape for his upcoming Broadway role.

The 'Harry Potter' star is preparing to bare his torso in the New York theatre district for upcoming musical 'How to Succeed in Business Without Really Trying', in which he will appear in some shirtless scenes as a window cleaner.

A friend said: "Daniel wants to completely re-sculpt his body. He's already lost nearly 14 lbs in the past month."

In order to achieve his dream body, Daniel - who appeared naked in theatre production 'Equus', which ran on London's West End and Broadway - has given up junk food and stopped smoking.

The friend added to The Sun newspaper: "Daniel is taking his fitness regime really seriously. He's stopped drinking, knocked the cigarettes on the head and is watching every mouthful."

In 'How to Succeed in Business Without Really Trying', the 20-year-old star will play J. Pierrepont Finch, who goes from a window cleaner to a mailroom employee who then quickly rises to the top of the corporate ladder to become vice-president of advertising at the Worldwide Wicket Company.

The play is to open next spring.