Fashion Looks of the Week By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on March 27, 2015 @ 11:05AM Pin Share Tweet Email Trending Videos Photo: AKM-GSI Looks of the Week 01 of 22 Jaime King Ethan Miller/Getty Images for Delano Las Vegas Jaime King turned heads at the grand opening of the Delano Las Vegas Hotel in a high-neck blue-and-black striped Charlotte Ronson midi-length number with a sheer yoke and sleeves, accessorizing with a set of silver danglers, a black clutch, and black pumps. 02 of 22 Jessica Chastain Ray Tamarra/GC Images Jessica Chastain worked her curves in a navy figure-flattering Roland Mouret sheath, complement the white sleeves with matching white pumps. 03 of 22 Michelle Monaghan Ray Tamarra/GC Images Michelle Monaghan was snapped in a navy Preen design with a sheer flouncy polka dot hemline and a utilitarian red-and-white belt. She accessorized with a Vita Fede ring and Louboutin pumps. 04 of 22 Kirsten Dunst Jemal Countess/Getty Images Kirsten Dunst ruled the red carpet at the New York premiere of The Two Faces of January in an incredible silver-embroidered white Chanel Couture design with a white Ferragamo clutch and metallic silver sandals to match. 05 of 22 Chloe Grace Moretz Prince Williams/FilmMagic Chloe Grace Moretz made a chic appearance at The Equalizer screening in an ecru-and-white woodblock-plaster jacquard Proenza Schouler dress and black pumps. 06 of 22 Bryce Dallas Howard Cindy Ord/Getty Images for Moroccanoil Bryce Dallas Howard struck a pro ladylike note at the Moroccanoil "Inspired by Women" campaign celebration in a crisp buttoned-up top, a midi-length pleated skirt and black pumps. 07 of 22 Reese Witherspoon Paul Morigi/WireImage Reese Witherspoon's print of choice for the red carpet premiere of The Good Lie was gardenia, courtesy of her floral Dior dress. Black ankle-strap sandals completed her look. 08 of 22 Rosie Huntington-Whiteley Cindy Ord/Getty Images for Moroccanoil Rosie Huntington-Whiteley dropped jaws at the Moroccanoil "Inspired by Women" campaign celebration in a plunging white blazer (with nothing underneath) and black trousers with Greek key detailing, both by Anthony Vaccarello x Versus Versace, complete with a Versus belt and shoes. 09 of 22 Katie Holmes Andrew H. Walker/Getty Images for DuJour Magazine Katie Holmes smoldered in a black knit Azzedine Alaia dress with revealing lines that ran up and down the bodice, accessorizing with a gold bangle and black pumps. 10 of 22 Camilla Belle Stefanie Keenan/WireImage Camilla Belle aptly wore cheery yellow-and-white printed Parker skirt set to celebrate the launch of Parker on Spring. Stella & Bow jewelry and nude Louboutin pumps rounded out her look. 11 of 22 Jaime King Stefanie Keenan/WireImage Jaime King was effortlessly chic at the launch of Parker on Spring in a white cami that she tucked into a pair of belted wide-leg pants, both by Parker, with Stella & Bow jewelry and black accessories. 12 of 22 Rose Byrne Robin Marchant/Getty Images Rose Byrne gave her gray tailored Thakoon trousers a flirty spin with a pink floral Thakoon Addition blouse and gray pumps. 13 of 22 Rashida Jones Stefanie Keenan/WireImage Rashida Jones also celebrated the launch of Parker on Spring in a crisp oversize white button-down with blue printed shorts, both by Parker, styling them with Stella & Bow jewelry, a gray chain clutch, and chunky ankle-strap black heels. 14 of 22 Kerry Washington Craig Barritt/Getty Images Kerry Washington stepped out for a cause, showcasing the plum-hued clutch she designed to benefit the Allstate Foundation Purple Purse (an organization that's working toward ending domestic violence) and unexpectedly pairing it with a strapless green Alexander McQueen dress and matching Casadei pumps. 15 of 22 Kristen Bell Steve Granitz/WireImage Expectant mom Kristen Bell was simply radiant at the LA premiere of This Is Where I Leave You in a flowy floral Elizabeth and James design and strappy metallic Louboutin sandals. 16 of 22 Olivia Palermo Alex Huckle/GC Images Olivia Palermo found middle ground between too-cool tough and ladylike sophistication with a gray knit that she tucked into a leather pencil skirt, complete with a studded Rebecca Minkoff moto jacket draped over her shoulders, a black croc pouch, studded shades, and nude Gianvito Rossi ankle-strap pumps. 17 of 22 Tina Fey Jon Kopaloff/FilmMagic Tina Fey went for a playful look and stood out at the LA premiere of This Is Where I Leave You in a striking orange-and-blue strapless asymmetric bonsai-print Osman dress, committing to the color palette with Vhernier bracelets, EF Collection earrings, and blue Louboutin pumps. 18 of 22 Jamie Chung Angela Pham/BFAnyc/Sipa USA Jamie Chung dialed back the raciness factor and grounded her plunging burgundy romper with a white tuxedo blazer, a single delicate pendant, a leopard print clutch and classic black pumps. 19 of 22 Taylor Swift Adam Nemser/startraksphoto Taylor Swift gravitated toward matching coordinates (aka her go-to uniform), selecting a floral crop top and shorts by Asos, with radiant purple Brian Atwood pumps. 20 of 22 Olivia Palermo Alpha /Landov Olivia Palermo knows the power of a strong outfit-making coat-she took on London Fashion Week shows in a colorfully embroidered mixed print Matthew Williamson topper, accessorizing with a gray clutch, clear frames, and floral loafer slippers. 21 of 22 Naomie Harris Lia Toby/WENN.com Naomie Harris graced the Burberry Prorsum spring/summer 2015 show in a lovely ivory Burberry Prorsum dress with a ruffled hem. A black leather Burberry bag and violet ankle-tie Bionda Castana pumps completed her look. 22 of 22 Alexa Chung AKM-GSI Alexa Chung perfected in-between weather dressing at the Topshop Unique spring/summer 2015 show in a long-sleeve yellow knit and a leopard print mini skirt. A blush pink chain purse and metallic gold pointy-toe flats were the finishing touches.