Sienna Miller has reportedly bought herself a £30,000 sports car to celebrate passing her driving test.

The Interview actress was spotted driving around Notting Hill in her new Audi TT convertible last week and is said to have gone for a collection of extra features including heated leather seats, integrated sat-nav and a Bose sound system.

A source told the Daily Mail: “Sienna learned to drive in the States and has just passed her UK test.”

“She has made a lot of money this year and decided to treat herself to an early Christmas present.”

“She went for an automatic because she doesn’t like driving a manual. But she’s a pretty good driver - she passed her test first time.”

“[Her boyfriend Rhys Ifans] is delighted. Now he’s relying on Sienna to ferry him around London.”