Stefani offers a lesson in French dressing at Cannes's amfAR dinner in France. Plus: Pippa Middleton, Ashton Kutcher, Cameron Diaz and more

  • GONE COUNTRY photo | Cameron Diaz, Colin Firth

Credit: FlynetUK/Flynet

Published: Thursday May 19, 2011 | 05:00 AM EDT

GONE COUNTRY

Cameron Diaz links up with Oscar-winning costar Colin Firth Thursday on the London set of their new movie, Gambit.