A lock of Justin Bieber's hair has sold for $40,668.

The 'Baby' hitmaker - who shocked fans when he changed his signature hairstyle recently - gave chat show host Ellen Degeneres a lock of his hair when he appeared on her show and she promptly put it up for auction on eBay receiving bids of $10,000 within one hour.

The auction closed today (02.03.11) with the successful bidder paying a whopping $40,668 for the tresses plus a chance to meet the teen sensation next time he appears on Ellen's chatshow. Ellen has donated the fee to charity The Gentle Barn Foundation,

Meanwhile it has been revealed that Justin celebrated his 17th birthday on Monday (01.03.11) in a $6,000-a-night suite at the St. Regis Monarch Beach hotel in Dana Point, California with girlfriend Selena Gomez.

A source said: "For the most part, Justin and Selena wanted to be Left Alone. They didn't have bodyguards or parents with them, but there was an emergency contact list at The Front desk with numbers for a bodyguard and some of their people's info if they needed it in any way."

The Presidential Suite where they stayed comes with a butler on call, two bedrooms, a dining room to seat 10, a private balcony overlooking the ocean and a hot tub.

Despite their lavish surroundings, the couple - who went public with their romance at The Oscars on Sunday night (27.02.11) - were seen enjoying a romantic dinner at the nearby Stonehill Tavern.