Justin Bieber surprises best friend with convertible Mustang

Justin Bieber treated a childhood pal to an extra special Christmas present on Sunday (25Dec11) - a convertible Ford Mustang sports car.

The Baby hitmaker surprised Ryan Butler by presenting him with the keys to the two-door vehicle and the singer's best friend immediately posted a photo of the lavish gift on his Twitter.com blog.

Butler, who grew up with Bieber in Stratford in Ontario, Canada, wrote on his blog, "Justin got me a present. swag!!!"

Meanwhile, the pop star celebrated the holidays at home in his native Canada with his family.

He shared a few snaps of himself with his half-siblings Jaxon, two, and Jazmyn, three, and wrote, "Spending time with family - feels really good. Going to get to see these smiles on Christmas.

He later added, "Merry Christmas from the family!"