Justin Bieber has lavished his childhood friend with a Mustang convertible for Christmas.

The 17-year-old Baby singer presented his best pal Ryan Butler with the keys to the white vehicle over the festive period.

The generous pop star has gone back to his hometown in Stratford, Ontario, for the holidays and did not go empty handed.

"Justin got me a present. #swag!!!" Ryan wrote on his Twitter page, where he also uploaded a picture of his pricey gift.

The two teens grew up together when Ryan's British parents, Martin and Sharon Butler, took Justin under their wing from when he was five-years-old.

Justin's mother Pattie was just 17 when she gave birth to him after a brief relationship with the singer's father Jeremy Bieber.

The teen idol is said to be worth $100 million dollars and is known for his generous gift-giving.

He apparently spent over $50,000 on a Chanel watch for his pop singer girlfriend Selena Gomez when she was unwell back in July and rented out the entire Staples Center in Los Angeles so he and his love could watch the Titanic movie on the Jumbotron.