Now that Keira Knightley has turned 21, she's free and legal to drink pretty much anywhere in the world (though maybe not in Afghanistan). So what better way to celebrate than by going on a month long booze cruise? That's right, according to Life Style Extra, Keira Knightley's new boyfriend, Rupert Friend is treating her to a tour of the best bars in the US.

He is said to have splashed out on a luxury yacht and a jet to take Keira to bars around New York, Chicago, Las Vegas, Hollywood and Hawaii.

A source told Britain's Daily Star newspaper: "It's such an original idea. She's been so busy filming 'Pirates of the Caribbean 3' and 'Silk' back-to-back, she needs a break and time with Rupert."

The screen beauty - who celebrated her birthday at a 1920s themed bash at London's Paper nightclub on Sunday (26.03.06) - couldn't wait to reach the milestone birthday so she could drink alcohol with her pals in the US.

She recently said: "It seems ridiculous. Over here I can drink myself silly.

"But I go back to my adolescence when I'm shooting in America. I'm on the Shirley Temples while my mates are getting pissed."