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 @ 01:23PM Pin Share Tweet Email Trending Videos Photo: John Sciulli/Getty Images Looks of the Week 01 of 22 Naomi Watts James Higgins/Splash News WHAT SHE WORE Naomi Watts hit the red carpet for the word premiere of Diana in a white Versace gown with a thigh-high slit and Louboutin peep-toe heels. Chopard drop earrings and an Edie Parker clutch finished the look. 02 of 22 Sarah Jessica Parker Getty Images WHAT SHE WORE Sarah Jessica Parker stopped by the Lexus Design Disrupted event in a Giles tunic dress, Gianvito Rossi pumps and Fred Leighton jewels. 03 of 22 Solange Knowles Marco Sagliocco/Sipa USA WHAT SHE WORE At the 3.1 Phillip Lim for Target launch party in New York City, Solange Knowles stepped out in a tuxedo style jacket and colorful animal print skirt, both from the collaboration. Givenchy sandals and a Fendi clutch completed the high-low look. 04 of 22 Jessica Alba Johns PKI/Splash News WHAT SHE WORE Also fêting the 3.1 Phillip Lim for Target launch, Jessica Alba sported a graphic print "Boom" sweatshirt, tuxedo pants, and a structured back from the collaboration. 05 of 22 Olivia Palermo Amanda Schwab/Startraksphoto.com WHAT SHE WORE Olivia Palermo attended the BCBG Max Azria show on the first day of New York Fashion Week in a draped dress by the designer, which she accessorized with summery jewelry and Ray-Ban shades.Editorial - Rights Managed Image - Please contact www.startraksphoto.com for licensing feeStartraks Photo New York, NYFor licensing please call 212-414-9464 or email firstname.lastname@example.org 06 of 22 Nicole Richie Richie Buxo/Splash News WHAT SHE WORE Richie hit the red carpet before hosting the 10th annual Style Awards in an embellished Antonio Berardi ensemble. She accessorized with Vivienne Westwood heels and Jennifer Meyer earrings. 07 of 22 Alexa Chung Mike Marsland/WireImage WHAT SHE WORE At the London launch party for her first book, It, Alexa Chung chose a Carven dress with a blue lace bodice and deep brown skirt. Loafers and a miniature handbag completed the look. 08 of 22 Hilary Swank BFAnyc/Sipa USA WHAT SHE WORE Hilary Swank made a colorful appearing at the Couture Council Artistry of Fashion Award luncheon honoring Michael Kors in a leopard print dress and strappy sandals, both by the designer. 09 of 22 Maria Sharapova JUSTIN CAMPBELL/startraksphoto WHAT SHE WORE At the Style Awards in New York City, Sharapova presented in a Preen skirt and top, Christian Louboutin pumps, and jewelry by Jack Vartanian. 10 of 22 Emma Watson James Whatling / Splash News WHAT SHE WORE Watson bared abs in a Balenciaga ensemble: An ivory bolero-styled top, black pants and black sequined peep-toes. 11 of 22 Scarlett Johansson Nicolas Genin/Abaca/startraksphoto.com WHAT SHE WORE At the Venice Film Festival Under the Skin premiere, Scarlett Johansson made an entrance in a black chiffon Versace gown with embellished off-shoulder straps and draped bodice. A beautiful statement Bulgari High Jewelry necklace was the finishing touch. 12 of 22 Rosie Huntington-Whiteley Mike Marsland/WireImage WHAT SHE WORE Huntington-Whiteley looked white-hot in a crisp Versace LWD with metallic straps, matching them with silver python Christian Louboutin pumps. 13 of 22 Rita Ora REX USA/Richard Young/Rex WHAT SHE WORE Ora stunned in a two-tone micro-beaded cut-out Etro gown that she styled with velvet-and-metal entwined earrings and a metal cocktail ring. 14 of 22 Alexa Chung Mike Marsland/WireImage WHAT SHE WORE Chung radiated in a metallic Carven top and matching pencil skirt. She accessorized with an acrylic Chanel clutch and black pumps. 15 of 22 Diane Kruger Venturelli/WireImage WHAT SHE WORE At the Jaeger-LeCoultre Gala Dinner, Diane Kruger epitomized glamour in a three-quarter-sleeve dark purple velvet Alberta Ferretti gown. She accessorized with a Jaeger-LeCoultre watch and H. Stern drop earrings. 16 of 22 Olivia Wilde Jon Furniss Photography/Invision/AP WHAT SHE WORE Wilde showed off her décolletage in a stunning black Gucci tuxedo, opting to pair her stunning look with nothing except for black pumps. 17 of 22 Dakota Fanning Action Press/startraksphoto.com WHAT SHE WORE Fanning graced the red carpet at the Venice Film Festival in a sweeping midnight-blue embellished Elie Saab Couture gown, styling her look with Rona Pfeiffer and Cathy Waterman rings. 18 of 22 Cate Blanchett Nicolas Briquet/ABACA/startraksphoto.com WHAT SHE WORE Blanchett knows how to make a statement. At the 2013 Deauville American Film Festival, she wore a sleeveless Christian Dior Couture gown with colorful embroidered disc-like details. 19 of 22 Kate Moss Jun Sato/WireImage WHAT SHE WORE At the Louis Vuitton 'Timeless Muses' exhibition in Tokyo, Kate Moss stood out in a pale-yellow rhinestone-studded Louis Vuitton dress with bell sleeves a flouncy hem. She styled her look with the label's black clutch and gray ankle-strap sandals. 20 of 22 Nicole Richie Amy Graves/WireImage WHAT SHE WORE Richie bared her midriff in a knitted pink separates. Her accessories included a chunky black-and-gold choker and black pointy-toe pumps. 21 of 22 Carey Mulligan Venturelli/WireImage WHAT SHE WORE At the Venice Film Festival, Carey Mulligan looked impeccably polished in a black silk Miu Miu dress with a white collar. Tortoiseshell shades and T-strap Roger Vivier peep-toes acted as her accessories. 22 of 22 Emmy Rossum John Sciulli/Getty Images WHAT SHE WORE To support the launch of Ali Larter's cookbook, Rossum showed up in a black long-sleeve Moschino Cheap and Chic top with a beaded neckline tucked into a sweet black Red Valentino A-line skirt with white edge detailing. She accessorized with a mirrored octagon Rebecca Minkoff clutch and basic black pumps.