It looks as though Cameron Diaz may have updated her wedding ring. On Tuesday, the actress, who recently completed her second book, was spotted out and about in LA, flashing a massive diamond stunner on her left hand. When Good Charlotte rocker Benji Madden proposed to her in December 2014, he did so with a thick gold band, which Cameron had been wearing until now, and while Cameron and Benji tend to keep their relationship private, every now and then they give us a glimpse at their loving union. Keep reading to see more photos of Cameron's stunning ring, and then take a peek inside the duo's sweet love story.