Fashion Denim A-List 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 @ 11:56AM Pin Share Tweet Email Trending Videos Photo: Fame Pictures Denim A-List 01 of 22 Miranda Kerr PacificCoastNews.com WHAT SHE WORE Kerr perfected the denim-on-denim trend with shades of blue. She styled her look with gunmetal ballet flats, a gray bag and oversized sunnies. 02 of 22 Olivia Palermo Andrew Toth/Startraksphoto.com WHAT SHE WORE Palermo launched Yliana Yepez Handbags in a tweed Rebecca Taylor peplum top, skinny jeans and cap-toe pumps. 03 of 22 Kate Bosworth Martin Sloan/iPhoto WHAT SHE WORE At the grand opening of L.A.'s Topshop, Bosworth layered her denim button-down with a brocade skirt and added black wedge sneakers and a bag to match. 04 of 22 Kate Beckinsale Michael Simon/startraksphoto.com WHAT SHE WORE Beckinsale shopped in a sheer blouse that she layered with a pastel blazer, chainstrap Chanel bag, whiskered denim and suede booties. 05 of 22 Elizabeth Banks Eric Charbonneau/Invision for Lionsgate/AP Images WHAT SHE WORE Elizabeth Banks took the stage at CinemaCon in a midriff-baring denim ensemble, gold Irene Neuwirth danglers and leather Jean-Michel Cazabat wedges. WHY WE LOVE IT The stylish star put her fresh spin on one of the season's hottest trends! 06 of 22 January Jones Richie Buxo / Splash News WHAT SHE WORE Jones layered her lace top with a denim jacket and leather leggings at The Paley Center's Mad Men panel. 07 of 22 Emmy Rossum FameFlynet, Inc WHAT SHE WORE Rossum dined at Chateau Marmont in peplum dress, silver clutch and ankle-strap Aldo Rise x Preen heels. 08 of 22 Sarah Jessica Parker Sean O'Neill/INFphoto.com WHAT SHE WORE Parker hit a Target event in cropped white jeans and a blazer that she accessorized with bright flowers and suede Jean-Michel Cazabat stilettos. 09 of 22 Jennifer Lopez Bauer-Griffin WHAT SHE WORE Jennifer Lopez went sightseeing in London wearing Bec amp Bridge's white blouse and blazer, skinny J Brand jeans, a python Stark clutch and studded Christian Louboutin booties. WHY WE LOVE IT Hot stuff coming through! This singer can make even basic jeans look sexy with edgy styling. 10 of 22 Jessica Alba Milton Ventura/Broadimage WHAT SHE WORE Alba took a walk in a blue tank, printed Current/Elliott jeans and caged sandals. 11 of 22 Kirsten Dunst Humberto Carreno/startraksphoto.com WHAT SHE WORE Dunst strolled Soho in a knotted button-down and denim skirt. She completed the look with cat-eye shades, a red handbag and simple sandals. 12 of 22 Zoe Saldana Michael Simon/startraksphoto WHAT SHE WORE Zoe Saldana shopped L.A. in black aviators, hoop earrings, a white tee, bright A|X Armani Exchange jeans and ballet flats. WHY WE LOVE IT Hot stuff coming through! The actress turned up the heat in blazing red denim. 13 of 22 Leelee Sobieski FameFlynet, WHAT SHE WORE Sobieski looked utterly refined in an elegant denim Christian Dior. She styled it with the label's Andy Warhol printed pumps. 14 of 22 Mila Kunis Frazer Harrison/Getty Images WHAT SHE WORE Kunis greeted fans at Comic-Con in a black blazer and blouse, layered necklaces, skinny jeans and lace pumps. 15 of 22 Alexa Chung PacificCoastNews.com WHAT SHE WORE Chung beat the N.Y.C. heat in a denim romper accented with espadrilles, a snakeskin bag and a chunky statement necklace. 16 of 22 Katie Holmes James Devaney/WireImage WHAT SHE WORE Katie Holmes made her way through Manhattan in a deep green Holmes & Yang blouse over skinny jeans. She accessorized with a woven bag, tortoiseshell sunnies and suede booties. WHY WE LOVE IT The actress showed off her long legs in fitted denim and low-heeled boots. 17 of 22 Jordana Brewster AKM-GSI WHAT SHE WORE Brewster shopped Beverly Hills in a crocheted Ella Moss skirt that she styled with a chambray shirt, blue Chanel bag and flat sandals. 18 of 22 Padma Lakshmi D Dipasupil/FilmMagic WHAT SHE WORE At a Gotham Comedy Club fundraiser, Lakshmi sported leather Alexander Wang sandals that she paired with a black blazer, printed tee, embellished clutch and electric blue jeans. 19 of 22 Kate Hudson AFP Photo/Tiziana Fabitizana Fabi/Getty Images WHAT SHE WORE Hudson looked cool in a printed tank, skinny jeans and suede pumps in Venice. 20 of 22 Pippa Middleton Niccolo/Rotello/MCP/Startraksphoto WHAT SHE WORE Middleton lunched in a belted denim jumper and leather espadrilles. 21 of 22 Nikki Reed David Livingston/Getty Images WHAT SHE WORE Reed hosted an L.A. event in a white button-down, skinny jeans, BaubleBar and Dana Rebecca Designs necklaces, a leopard print clutch and red T-straps. 22 of 22 Reese Witherspoon Fame Pictures WHAT SHE WORE Witherspoon got a touchup at her Santa Monica salon in a chambray shirtdress from Billy Reid, bright wedges, a Maya Brenner necklace and a leather Chloe satchel.