Our PicksFrom Kate Middleton to Miley Cyrus, the Best & Worst Dressed (PHOTOS) The Fashion Beast Team10.25.13Our PicksFrom Kate Middleton to Miley Cyrus, the Best & Worst Dressed (PHOTOS) Marion Cottilard stuns in Dior, Lady Gaga dons a cheese wedge head, and Miss Wrecking Ball cleans up in Marc Jacobs. See the fashion highs and lows of the week. The Fashion Beast Team10.25.13 8:45 AM ETGettyMarion Cottilard stuns in Dior, Lady Gaga dons a cheese wedge head, and Miss Wrecking Ball cleans up in Marc Jacobs. See the fashion highs and lows of the week. Jon Kopaloff/FilmMagicBest Dressed, Hitting a Strong Note: Marion CotillardMarion Cotillard practically sleeps in Dior, but her appearance at the Elle Women in Hollywood Awards in Los Angeles on Monday night brought out an exceptionally good dress: a silver, strapless Dior number with matching heels. Andrew H. Walker/GettyBest Dressed, Perfect for Fall: Giovanna BattagliaThe W editor looked chic (and warm) at a Prada Journal event in New York in a belted Prada gingham coat and bright purple Alexandre Birman heels. Jon Kopaloff/FilmMagicBest Dressed, a Well-Placed Zipper: Lake BellLake Bell has been on a roll recently—and her look at the Elle Women in Hollywood Awards in L.A. on Monday was no exception. Bell wore a black Altuzarra stress with a zipper up one side, Gianvito Rossi black-and-white pumps, and carried a Reece Hudson clutch. Craig Barritt/GettyBest Dressed, Short and Simple: Michelle WilliamsSometimes keeping it simple really is best. Michelle Williams looked lovely in Louis Vuitton at the Whitney Gala and Studio Party in New York on Wednesday night. Monica Schipper/FilmMagicBest Dressed, Surprisingly Lady-Like: Miley CyrusAfter weeks on our worst dressed list, Miley moonlighted on the other side—in a perfectly ladylike sparkling aqua Fall 2013 Marc Jacobs dress at the 30th annual Fashion Group International Night of the Stars on Tuesday in New York. Jeff Vespa/WireImageBest Dressed, It’s Always Sunny in L.A.: Diane KrugerAt the CFDA/ Vogue Fashion Fund Event at the Chateau Marmont this week, Diane Kruger looked radiant in a white Cushnie Et Ochs dress and Celine shoes. John Stillwell/GettyBest Dressed, the Royal Treatment: Kate Middleton and GeorgeThe youngest person ever to grace our best dressed list, 3-month-old Prince George in his christening gown, took the cake this week. Not far behind was his mum, who looked stunning in an Alexander McQueen ruffled suit and a Jane Taylor fascinator. Jason Merritt/GettyYou Decide, Fringe Factor: Naomie HarrisInteresting silhouette or ball of string? Naomie Harris looked unique in a Calvin Klein dress at Elle’s Women in Hollywood Awards in L.A. on Monday night. Chad Buchanan/WireImageWorst Dressed, Gaga-Zilla: Lady GagaA giant block of furry cheese with eyeholes—otherwise known as Lady Gaga—appeared in Berlin on Thursday to promote her upcoming album, ARTPOP. Jon Kopaloff/FilmMagicWorst Dressed, Summer Crop Top in the Middle of Fall: Kat GrahamThe actress arrived at the Elle Awards in a bizarre white tennis skirt and crop top. Niki Nikolova/FilmMagicWorst Dressed, Sparkling Spandex: Nicole ScherzingerScherzinger channeled an uncorked genie in a sparkling spandex crop top and, um, harem pants.