GettyOur PicksBest & Worst Dressed of the Week: From Kristen Stewart to Miley CyrusFashion’s highs and lows of the week.Isabel Wilkinson12.21.12 4:45 AM ETGettyGettyFrom Kristen Stewart’s lacy two-piece to Kate Middleton’s stylish return to the public eye, see fashion’s highs and lows of the week. Nick Tininenko/WireImage, via Getty Best Dressed, Warm for Winter: Kate BosworthBosworth (here with James Van Der Beek) wore a gray and white dress from Proenza Schouler’s Fall 2012 collection, which she paired with Christian Louboutin “Troop” booties, to the Audi Holiday party in Aspen on Tuesday. Jason Merritt/GettyBest Dressed, Even If It Wasn’t Raining: Amanda SeyfriedSeyfried attended Hugh Jackman’s “Walk of Fame” ceremony on the 13th in a Burberry trench coat with red trim. Andrew H. Walker/GettyBest Dressed, Maybe Still In Character as Lisbeth Salander: Rooney Mara At the Dubai Cares and Oxfam gala on Dec. 14, Mara looked as edgy as ever in a custom black Calvin Klein dress with lacquered skirt. The Image Gate/GettyBest Dressed, Prim and Proper: Carey MulliganAt the ASMALLWORLD gala in Gstaad, Switzerland on Dec. 15, Mulligan looked perfectly ladylike in a Valentino Fall 2012 dress and Prada sandals. Craig Barritt/GettyBest Dressed, Leather That Works: Kerry WashingtonLeather dresses are usually perilous, but Kerry Washington looked delightful in this one, which she paired with nude pumps and a neck full of chains while visiting 106 & Park to promote Django Unchained. David Davies/EPA, via LandovBest Dressed, She’s Baaa-ack: Kate MiddletonThe Duchess of Cambridge made a speedy recovery following her hospital visit and showed up at the BBC Sports Personality of the Year awards in a green Alexander McQueen dress, Jimmy Choo pumps, and an Asprey pendant necklace. Mike Coppola/GettyWorst Dressed, Accidental Swimwear Edition: Kristen StewartLittle does the world know, Kristen Stewart has worn some sort of bathing suit on the red carpet for the last six months. And the blue silk two-piece she wore to the On The Road premiere was no exception. David Becker/GettyWorst Dressed, for Taking the Holiday a Little Too Literally: Irene Sofia Esser QuinteroMiss Venezula strode on to the stage at the Miss Universe pageant on Wednesday night wearing what was essentially a perfectly decorated Christmas tree. David Becker/GettyWorst Dressed, Avant Garde Bumble Bee: Leila LopesQuintero tied for worst dress at the pageant with Miss Angola, Leila Lopes, who caught everyone’s eye in this bright (and utterly bizarre) ensemble. Christopher Polk/GettyWorst Dressed, Looking Slitty: Miley CyrusAh, Miley. You look more and more like Jared Leto every day. This time, she wore an “Aligator dress,” with convenient slits down one side to the VH1 “Divas” event on December 16.