It doesn't get much more elegant than Marion Cotillard in Dior or Nicole Kidman in Oscar de la Renta, nor does it get much cooler than Willow Smith in Chanel or Diane Kruger in Preen. Click through for all that and the rest of our 10 best dressed of this week!

Georgia May Jagger and Jerry Hall for H&M: No Sears family portraits for this lot! Here's Jerry Hall and her equally gorgeous daughter Georgia May Jagger posing in H&M's new campaign. Wonder if they got any matted and framed? Or on a key chain. {HuffPo} Jaeger Designing Uniforms For Will and Kate's Home: The beloved British heritage brand will be designing the new uniforms for the royal couple's front of house team at Kensington Palace. Guess that means I'll have to find someone else to design mine.... {Telegraph} Rachel Zoe Won't Let Jennifer Garner Wear Maternity: The super stylist has apparently banned Jen from wearing maternity clothes to events, but with four more months to go, Garner says it's going to have to happen "sooner or later." Or she could just go the Jamie Lynn Spears route and wear really huge t-shirts. {InStyle}

This week, fashion's finest and Hollywood's sharpest were out in full force promoting their favorite labels. Thandie Newton showed off Spring 2011 Louis Vuitton in London, Eva Green wore her friend Tom Ford, and Drew Barrymore was decked out in Rag & Bone at the label's Intermix event in Los Angeles. At the CFDA Award nominations party, Mary Kate and Ashley Olsen wore...The Row! And CFDA winner Richard Chai wore...Richard Chai! And they all looked fantastic.

more This week Elle Fanning, who might be becoming our favorite Fanning (sorry, Dakota), looked adorable and age-appropriate in Valentino. Dree Hemin

We've seen some big stars like Thandie Newton and Halle Berry in Erdem's creations, and last night, at the ultra exclusive (so exclusive, you practica