Brad shows his adopted son how quad biking's done. The Pitt family had invited friends Gwen Stefani and Gavin Rossdale over.

Brad Pitt and Angelina Jolie have been making the most of being back on home territory with an invitation to family friends Gwen Stefani and Gavin Rossdale to pop over for Sunday afternoon.

Over the US holiday weekend the guys, who included four-year-old Maddox, had fun racing about on quad bikes at the acting superstars' Santa Barbara estate.