Cameron Diaz Sports Ring on THAT Left Finger & Sparks Engagement Rumors

Cameron Diaz rocks a mysterious ring on her left finger while grabbing some grub at Gracias Madre on Friday (November 7) in West Hollywood, Calif.

The 42-year-old actress was joined for the lunch by two close pals while her boyfriend Benji Madden is busy on tour with his brother Joel.

PHOTOS: Check out the latest pics of Cameron Diaz

In case you missed the big news, Cameron is set to host Saturday Night Live for the fourth time in two weeks with musical guests Bruno Mars and Mark Ronson, who are promoting their latest single “Uptown Funk!”.

10+ pictures inside of Cameron Diaz grabbing lunch with friends…