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 @ 11:43AM Pin Share Tweet Email Trending Videos Photo: Jeff Daly/Invision/AP Looks of the Week 01 of 22 Molly Sims Harry Pluviose / Retna Ltd WHAT SHE WORE At the Heineken US Open Kick-off Party, Molly Sims went casual-chic in a Tibi peachy top tucked into coral tapered trousers. She topped off her ensemble with gold Stella & Dot jewelry and nude pumps. 02 of 22 Lily Collins FameFlynet, Inc WHAT SHE WORE Collins turned heads in a custom red-hot Houghton look: A sleeveless Chantilly lace lop and a Chantilly lace skirt with a high-low hem. She styled her look with matching red pumps and Jacob & Co jewelry. 03 of 22 Rosie Huntington-Whiteley PacificCoastNews.com WHAT SHE WORE Huntington-Whiteley hit the streets of London in a black silk Gerard Darel jumpsuit, complete with a periwinkle-blue Giorgio Armani handbag, Michael Kors watch and ankle-strap heels, and tortoiseshell Miu Miu sunnies. 04 of 22 Heidi Klum Kristina Bumphrey/Startraksphoto.com WHAT SHE WORE At the America's Got Talent post-show, Heidi Klum stepped onto the red carpet in a plunging crystal-embroidered white Kaufmanfranco shift with a sheer panel. She styled with Lorraine Schwartz jewelry and strappy Christian Louboutin heels. 05 of 22 Tina Fey Richie Buxo / Splash News WHAT SHE WORE Fey worked her curves in a body-hugging two-tone Reed Krakoff dress with printed and perforated detailing. A gold cuff and black Casadei pumps served as her accessories. 06 of 22 Lily Collins Andreas Rentz/Getty Images for Constantin Film WHAT SHE WORE At the Mortal Instruments: City of Bones premiere in Germany, Lily Collins accessorized her black sleeveless Paper London crop top and black floor-length Halston Heritage tulip skirt with a chunky gold chain necklace and gold Movado cuff watch. 07 of 22 Rosamund Pike tsuni / Gamma-USA WHAT SHE WORE Pike wore an LBD from Marios Schwab with a sheer yoke and sleeves, and black pumps to the Los Angeles premiere of The World's End. 08 of 22 Elizabeth Hurley BAUER-GRIFFIN.COM WHAT SHE WORE Hurley graced the red carpet in a slinky green gown with keyhole detailing, pairing it with silver accessories. 09 of 22 Maria Sharapova LUIS GUERRA/RAMEY PHOTO WHAT SHE WORE Sharapova launched her Sugarpova accessory collection in a black-and-blue mini David Koma dress with leather detailing and a ruffled hem, pairing it with black patent Rupert Sanderson pumps. 10 of 22 Taylor Swift Lester Cohen/WireImage WHAT SHE WORE Swift broke The Staple Center's record of most sold-out shows for a solo artist and feted the occasion in Elie Saab separates: An ivory blouse with lace detailing and black shorts. Black peep-toes completed her look. 11 of 22 Katrina Bowden Andrew H. Walker/Getty Images for Moet & Chandon WHAT SHE WORE Bowden stuck with a summery palette, opting for a pretty mint green lace skater dress and styling it with a white cross-body bag, nude strappy heels and a stack of skinny bangles. 12 of 22 Olivia Wilde Taylor Hill/FilmMagic WHAT SHE WORE At the Drinking Buddies screening in Brooklyn, Olivia Wilde worked it in a sculpted teal J. Mendel dress with cut-outs and a full skirt. An EF Collection bangle and strappy nude Christian Louboutin heels were all she needed to complete the look. 13 of 22 Rebecca Hall Johns PKI/Splash News WHAT SHE WORE Hall hit the Closed Circuit screening in an off-shoulder navy Celine ensemble, complete with the label's matching clutch and taupe boots. 14 of 22 Cate Blanchett Don Arnold/WireImage WHAT SHE WORE At the Blue Jasmine premiere, Blanchett went for a two-tone coral floor-grazing Roksanda Ilincic gown and opted out of accessories. 15 of 22 Bella Thorne Richard Shotwell/Invision/AP WHAT SHE WORE At the Imagen Awards, Bella Thorne elevated her black strapless Olima Atelier dress with key accessories: A statement Iossellianim necklace, gold bangles, Pierre Hardy bag and zippered Prada heels with gold accents. 16 of 22 Aubrey Plaza All Access Photo / Splash News WHAT SHE WORE Plaza shimmered on the red carpet in a sequined strapless Peter Pilotto dress that she paired with yellow Christian Louboutin pumps. 17 of 22 Jamie Chung McAf / Splash News WHAT SHE WORE Out on the town, Chung flaunted her legs in studded DOMA Leather short shorts, pairing it with a white sleeveless button-down and black Ann Taylor booties and draping a yellow DOMA Leather moto jacket over her shoulders. 18 of 22 London XPOSUREPHOTOS.COM Collins' on-trend streak continued in London, picking Brian Atwood leopard print pumps to pair with her all black Stella McCartney ensemble. 19 of 22 Olivia Wilde Dan Steinberg/Invision/AP WHAT SHE WORE At the Drinking Buddies screening, Olivia Wilde dressed accordingly, sprucing up her Bruce Springsteen tee with a black asymmetrical Robert Rodriguez skirt, a Smythson clutch, gold cuff and black pumps. 20 of 22 Vanessa Hudgens Guillermo Proano/WENN.com WHAT SHE WORE Hudgens worked the red carpet in a long-sleeve gold embroidered black Temperley London midi dress that she paired with Anita Ko and Coomi rings, H. Stern earrings, black Edie Parker clutch and Saint Laurent pumps. 21 of 22 Rosie Huntington-Whiteley Craig Harris/WENN.com WHAT SHE WORE Huntingon-Whiteley stepped out in a pinstripe knotted crop top and matching trousers, a plum shoulder bag and black strappy heels. 22 of 22 Eva Longoria Jeff Daly/Invision/AP WHAT SHE WORE At the Telemundo's Premios Tu Mundo Awards, Eva Longoria wowed on the blue carpet in a black long-sleeve sequined Emilio Pucci dress with a point d'esprit back. She accessorized with black Christian Louboutin pointy-toe pumps.