Fashion Top 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 July 25, 2013 @ 12:11PM Pin Share Tweet Email Trending Videos Photo: Tammie Arroyo / AFF-USA.COM Top Looks of the Week 01 of 22 Zoe Saldana Jon Furniss/Invision/AP WHAT SHE WORE Zoe Saldana made an entrance at the London premiere of Star Trek Into Darkness in Vionnet's black and white gown, diamond Tiffany & Co. jewels and ankle-strap Christian Louboutin peep-toes. WHY WE LOVE IT Talk about drama! A high slit, deco embroidery and stark color combo made this design a showstopper. 02 of 22 Isla Fisher Marion Curtis/Startraksphoto.com WHAT SHE WORE Fisher paired relaxed tuxedo stripe separates with pointy-toe stilettos at a luncheon for The Great Gatsby. 03 of 22 Julianne Moore Ilya S. Savenok/FilmMagic WHAT SHE WORE Moore worked head-to-toe black at the What Maisie Knew screening in a lace-detailed Valentino cocktail dress and strappy Tabitha Simmons heels. 04 of 22 Julianne Hough Frederick Taylor/Broadimage WHAT SHE WORE Hough arrived for An Unforgettable Evening in a scarlet Carolina Herrera cocktail dress and black Stuart Weitzman pumps. 05 of 22 Isla Fisher Jemal Countess/Getty Images WHAT SHE WORE Isla Fisher was lovely at the New York premiere of The Great Gatsby in a peek-a-boo Dolce & Gabbana gown and jeweled Roger Vivier clutch. WHY WE LOVE IT Lace and satin accents added a fittingly glam spin to the actress's floral dress. 06 of 22 Carey Mulligan Dan Jackman/WENN.com WHAT SHE WORE Mulligan paired her red hot dress with platform Brian Atwood heels at the world premiere of The Great Gatsby. 07 of 22 Katy Perry Harry Pluviose / Retna Ltd. WHAT SHE WORE Perry made an entrance in a strapless Vera Wang gown at the Delete Blood Cancer gala. 08 of 22 Nina Dobrev Gregorio T. Binuya/Everett Collection WHAT SHE WORE At the New York premiere of The Great Gatsby, Dobrev channeled the era in a black and gold cocktail dress, jeweled Jimmy Choo clutch and metallic Rupert Sanderson pumps. 09 of 22 Olivia Wilde Michael Stewart/WireImage WHAT SHE WORE Wilde attended the Whitney Museum bash in a leopard print Max Mara design, House of Lavande pendant necklace, artistic Anya Hindmarch clutch and strappy Stuart Weitzman sandals. 10 of 22 Katy Perry Stefanie Keenan/Getty Images for Prada WHAT SHE WORE Katy Perry feted Prada's The Great Gatsby exhibition in the label's floral sheath, a printed clutch and bowed sandals. WHY WE LOVE IT Never one to shy away from making a statement, the singer stood out from the crowd in her fashion-forward design. 11 of 22 Carey Mulligan Billy Farrell/BFAnyc/Sipa USA WHAT SHE WORE Mulligan previewed Prada's The Great Gatsby exhibition in the label's embroidered cocktail dress and satin platforms. 12 of 22 Sarah Jessica Parker Gregorio T. Binuya/Everett Collection WHAT SHE WORE Parker took the stage at an AOL NewFront event in a white L'Agence shift that she styled with a bib necklace, anaconda Elisabeth Weinstock crossbody and pointy-toe Manolo Blahnik heels. 13 of 22 Kate Beckinsale Jason Merritt/Getty Images for SELF Magazine WHAT SHE WORE Beckinsale helped launch Mandy Ingberas's yoga book in a navy Monique Lhuillier cocktail dress, sparkling danglers, a leather cuff and white Rupert Sanderson pumps. 14 of 22 Kate Bosworth Steve Jennings/WireImage WHAT SHE WORE Kate Bosworth looked stunning in an illusion neckline Oscar de la Renta LBD and black accessories to match, including a Devi Kroell clutch, at the Big Sur premiere. WHY WE LOVE IT Retro waves and bold scarlet lips added old Hollywood appeal to the actress's ladylike cocktail dress. 15 of 22 Zoe Saldana Future-Image/ZUMAPRESS.com WHAT SHE WORE Saldana walked the red carpet for the Berlin Stark Trek Into Darkness premiere in Balmain's gold-embroidered top and fuchsia silk skirt, diamond EF Collection jewels and netted Louboutins. 16 of 22 Alice Eve i-Images, PacificCoastNews.com WHAT SHE WORE The Stark Trek Into Darkness actress stood out in a cutout Emilio Pucci column at the film's Berlin premiere. 17 of 22 Catherine Middleton PA PHOTOS /LANDOV WHAT SHE WORE Middleton made a royal appearance in a pretty pink shift that she styled with a complementary pastel topper and nude extras. 18 of 22 Zoe Saldana Carstensen/DPA/ZUMAPRESS.com WHAT SHE WORE Zoe Saldana looked over Berlin in a wool flannel shell and pleated skirt from Calvin Klein Collection, a vine Jennifer Behr headpiece and perforated Jimmy Choo sandals. WHY WE LOVE IT Simply chic! The actress looked sophisticated and cool in her peek-a-boo gray separates. 19 of 22 Kerry Washington Aaron J. Thornton/PR Photos WHAT SHE WORE At the annual the White House Correspondents' event, Washington dined in a printed Wes Grodon gown that she accented with gold jewels and a sleek clutch. 20 of 22 Katy Perry Johns PKI / Splash News WHAT SHE WORE Perry turned heads in a Giambattista Valli silk draped gown and artistic belt at that she paired with Adeler jewels at the White House Correspondents' Association Dinner. 21 of 22 Selena Gomez INFphoto.com WHAT SHE WORE Gomez hit the Radio Disney Music Awards in a sculpted Blumarine skirt, leather tee and ankle-strap Nicholas Kirkwood heels. 22 of 22 Claire Danes Tammie Arroyo / AFF-USA.COM WHAT SHE WORE Danes attended the White House Correspondents' dinner in a jeweled Prada column.