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InStyle's editorial guidelines Updated on March 27, 2015 @ 01:47PM Pin Share Tweet Email Photo: Gregory Pace/BEImages Looks of the Week 01 of 22 Rose Byrne Courtesy of Max Mara WHAT SHE WORE As the next recipient of the 2014 Women in Film Max Mara Face of the Future Award, Rose Byrne showed her support for the label, turning up at its fall/winter 2014 show during Milan Fashion Week in head-to-toe Max Mara: a black silk tuxedo jacket over a gold lame tank and cream silk trousers, with a black mini cross-body bag. A delicate gold bar necklace completed her look. 02 of 22 Naomie Harris Charley Gallay/Getty Images WHAT SHE WORE Harris hosted the grand opening of the newest David Yurman store in Topanga, Cali., celebrating in Calvin Klein: a white bandeau, a woven black-and-white skirt topped with a white tuxedo blazer. Black accessories and silver-and-diamond David Yurman jewelry served as the finishing touches. 03 of 22 Elizabeth Olsen Getty Images WHAT SHE WORE Olsen debuted her brunette tresses in a black-and-white Maison Martin Margiela ensemble paired with black peep-toe Bionda Castana booties. 04 of 22 Jennifer Lopez CL / Splash News WHAT SHE WORE Lopez struck a fierce note at the American Idol XIII Finalists Party in a black cut-out Cushnie et Ochs dress, accessorizing with Joan Hornig double-petal earrings, bracelets and rings by W. Britt, a black clutch and black patent pumps. 05 of 22 Lupita Nyong'o Dennis Van Tine/Future Image/WENN WHAT SHE WORE Red carpet darling Lupita Nyong'o temporarily ditched her trademark monochromatic looks in favor for a green printed Peter Pilotto dress, styling it with Jamie Wolf square studs, a Joan Hornig ring, a gold clutch, and mint green Manolo Blahniks. 06 of 22 Beyonce David M. Benett/Getty Images WHAT SHE WORE Beyonce graced the stage at the 2014 Brit Awards in a sparkly teal Vrettos Vrettakos gown with sheer sleeves, furthering the bling factor with statement chandelier earrings. 07 of 22 Rosie Huntington-Whiteley Wenn WHAT SHE WORE Huntington-Whiteley reached for her go-to silhouette to show off her model-esque legs, arriving at the 2014 Brit Awards in a high-shine red-and-black zebra striped Saint Laurent mini, paired with black pumps. 08 of 22 Rita Ora Phil Loftus/Capital Pictures / Retna Ltd. WHAT SHE WORE Ora lit up the Brit Awards in a sunny Prada gown complete with green gems lining the sides. A custom Jennifer Fisher necklace, two skinny cuffs (one on each wrist), and cocktail rings rounded out her red carpet look. 09 of 22 Emma Watson WeirPhotos / Splash News WHAT SHE WORE Fashion risk-taker Emma Watson treated us to another one of her stylish looks, this time in a Giambattista Valli LBD with a shimmery top and a knotted skirt. A gold-handle black M2Malletier clutch and black Christian Louboutin pumps completed her look. 10 of 22 Katy Perry Rex USA WHAT SHE WORE Perry was all smiles in a silk ivory rose-print dress from the Vivienne Westwood Gold Label Capsule Collection with jewel-studded Christian Louboutins. 11 of 22 Naomie Harris Richard Young/Rex/REX USA WHAT SHE WORE At the Burberry Prorsum fall/winter 2014 show at London Fashion Week, Naomie Harris looked on in a deliciously lush navy coat (from the label) that she unexpectedly paired with lemon-hued sandals. 12 of 22 Olivia Palermo Wenn WHAT SHE WORE At the Peter Pilotto fall/winter 2014 show, Palermo showed her support in a full printed midi skirt that she styled with an oxblood long-sleeve top, a Charlotte Simone fur stole, and red accessories. 13 of 22 Keira Knightley David M. Benett/Getty Images WHAT SHE WORE Knightley offset her playful blue-and-white polka-dot Prada dress with a tough leather Burberry Brit moto jacket, a quilted gray Chanel clutch and simple black pumps. 14 of 22 Ashley Madekwe David M. Benett/Getty Images WHAT SHE WORE Madekwe made an entrance at the Topshop Unique fall 2014 show in a sequined emerald pencil skirt that she grounded with a black sweater, a draped moto jacket, a Chanel cross-body purse and strappy heels. 15 of 22 Amy Adams David M. Benett/Getty Images WHAT SHE WORE At the post-BAFTA party, Amy Adams brought her fashion A game in a slinky blue Victoria Beckham number that fit and flattered her every curve. She styled her dress with a pair of drop diamond earrings and black peep-toes. 16 of 22 Lily Collins David M. Benett/Getty Images WHAT SHE WORE As the face of Lancome, Collins went all out for the beauty brand's pre-BAFTA party, wearing a strapless Mary Katrantzou dress (with pockets!) in a 'foli' rose blue print. A purple leather Smythson clutch, a Jack Vartanian snake cuff, and nude pumps completed her look. 17 of 22 Naomie Harris David M. Benett/Getty Images WHAT SHE WORE Harris dined at the Harvey Weinstein pre-BAFTA dinner in an emerald off-shoulder lace Burberry Prorsum dress with dark accessories. 18 of 22 Lupita Nyong'o Karwai Tang/WireImage WHAT SHE WORE Nyong'o stood out at the BAFTA nominees party in a ladylike pink tweed Chanel Couture jacket-and-dress set with a playful candy-striped Chanel purse and metallic Christian Louboutin pumps. 19 of 22 Kate Middleton Xposurephotos WHAT SHE WORE At the opening of the ICAP charity art room, the Duchess of Cambridge dressed up for the occasion in a smart royal blue L.K. Bennett dress with silver jewelry and black accessories. 20 of 22 Jessica Brown Findlay Dave J Hogan/Getty Images WHAT SHE WORE Findlay wowed at the Winter's Tale premiere in a white organza embroidered Dior Haute Couture embroidered with pale blue and pink feathers, accessorizing with delicate drop De Beers diamond earrings and cap-toe Loubs. 21 of 22 Robin Wright Veronica Summers / Splash News WHAT SHE WORE Wright skipped dresses and went for a Kate Spade Saturday trapeze top jumpsuit for the season 2 premiere of House of Cards, keeping it simple with black strappy pumps. 22 of 22 Diane Kruger Gregory Pace/BEImages WHAT SHE WORE At the Hugo Boss fall/winter 2014 show, Kruger showed her support for designer Jason Wu, arriving in an all-black ensemble, save for a black-and-white sweater and clutch.