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World champion Jenson Button has now officially clocked on for duty at McLaren - with the Woking-based outfit showing him off in his new team gear for the first time.

Button's contractual terms with former team Brawn GP meant he could not properly begin work for McLaren until 2009 had finished.

But the start of the New Year means Button is now an official McLaren driver - and the team has released the first image of him in McLaren team kit.

The team's twitter feed has a picture of Button (reproduced on the right courtesy of McLaren) in the race bays at Woking - with the team also releasing a New Year's video message from the reigning champion.

Button tells fans: "Hi everyone, and Happy New Year. It is a real pleasure to be part of the Vodafone McLaren Mercedes team and I am looking forward to working with you all in 2010."

Button is currently on holiday in Hawaii and is scheduled to make his first public appearance of 2010 at the AUTOSPORT International Show later this month.