Break down both ladies' Riviera wardrobes and they've followed a very similar style recipe…
Day 1 and each lady eased in with an understated but perfectly polished look. In 2012 Diane impressed in a pleated Versus mini at the Juror's photocall. Fast-forward to 2013 at the same event and Nicole plumps for a body-skimming LBD and burgundy heels. So far, so stylish.
ALL THE FASHION FROM CANNES 2013
The Opening Gala and it's time to up the ante. While Diane went all Grecian goddess on us in a mint-green Giambattista Valli gown, Nicole did modern ladylike in an embroidered Christian Dior midi dress. Strong looks for both ladies.
Monochrome seems to be a Cannes juror staple, and while Nicole rocked the trend in a feathered Chanel column gown, Diane took a risk that ensured she pulled off one of our favourite Cannes' looks yet - a checked Christian Dior dress with flowing bustle skirt, which she wore at the 2012 Closing Ceremony.
As for hair and make-up, both ladies know that there's no better way to turn heads than with a seriously BIG updo.
SEE MORE HOT HAIRSTYLES FROM 2013
We hope next year's jurors are taking note.
GET MORE STYLE TIPS FROM DIANE WITH HER RED CARPET STYLE GUIDE...