Jessica Alba's Ultimate Guide to Denim

Good Genes, Great Jeans: Jessica Alba's Ultimate Guide to Denim

Jessica Alba knows what it takes to be queen of the street style scene: an ample supply of cool-girl denim. During everything from coffee runs to family park days, Jessica has proved the power of denim separates, delivering an array of effortlessly cool ensembles time and time again. So, there really isn't a more fitting birthday tribute than a closer look at her jean-ius styling — just dust off your favorite denim pieces and add a street-chic twist with 92 Alba-inspired styles to scroll through right here.

Jessica doubled up on color and print donning a red-and-purple striped Splendid tank with a coordinating scarf and blue ballet flats in LA.

While running errands in Santa Monica, Alba showed a little country flavor in a gauzy button-down, cuffed denim, and studded cowboy boots by Isabel Marant.

Jessica Alba doubled up on denim in a gray jean jacket and floral-print skinny jeans while heading to her Santa Monica, CA, office.

Jessica Alba brightened her washed black denim with a high-wattage Kenzo coat while attending Jessica Simpson's baby shower in Beverly Hills. Husband Cash looked just as cool in his monochrome look.

Jessica layered up in a printed MiH blouse, a cropped woven jacket, and dark flared denim, then added a pop of flair via a red Tory Burch tote.

While shopping around Beverly Hills, Jessica topped her white blouse and skinny jeans with neon pink Charles Philip smoking slippers and a matching scarf.

Jessica layered a Spring Peter Som coat over a silky blouse and skinny denim, then finished off with a pair of pastel lace-up sandals at the launch of her book, The Honest Life, in LA.

Jessica Alba paired a bright pink sweater and matching scarf with washed black denim and a printed Christian Louboutin tote after touching down in Miami.

Jessica stuck with an icy blue palette, donning a knit Paper Denim & Cloth sweater and light blue denim. Ever the stylist, she injected a pop of print via floral slip-ons in LA.

Jessica exuded Spring in a floral Karen Zambos maxi, a denim Genetic Denim vest, and a two-toned wrap scarf in LA.

Jessica Alba was the picture of Spring perfection, rocking a bright yellow sweater, ripped denim, a hot-off-the-runway 3.1 Phillip Lim purse, and chunky Zadig & Voltaire moto boots in Santa Monica.

Jessica's all-black LA look was the perfect backdrop to make her leopard-print top and bright orange Tory Burch tote really pop.

Jessica Alba proved the power of a statement coat in a tweed H&M creation, paired with dark skinnies, while shopping around LA.

Get sporty-chic inspiration from Jessica's park date style: an Opening Ceremony varsity jacket, wedge Isabel Marant sneakers, and a navy Vince Camuto crossbody. And of course, a pair of perfectly sleek boyfriend jeans.

On her way to her office in Santa Monica, Jessica mixed trends in a hot pink blazer, star-print denim, textured Rebecca Minkoff boots, and her trusty Michael Kors crossbody.

Jessica balanced her LA look — and breakfast treats! — in a boxy sweater and skinny indigos tucked into brown riding boots.

Jessica brought her C-game (major coat game, that is!) in a fur-trim Sandro topper and wide-leg denim while dining at Matsuhisa restaurant in Beverly Hills.

Jessica continued her reign as the print-jean queen, styling a pair of Big Star houndstooth denim with a colorblock coat and cutout leather duffel, both by Gérard Darel, and Isabel Marant sneakers in LA.

Jessica made a case for cargos, pairing them with trendy Isabel Marant wedged sneakers and a printed scarf while grabbing a coffee in Beverly Hills.

Even a rainy day can't damper Jessica's killer style. The model mom bundled up in a leather-sleeved military jacket by Sanctuary, fishnet-print Current/Elliott denim, and leather Rupert Sanderson ankle boots.

Jessica looked biker chic in a studded Simone leather jacket, star-print Current/Elliott jeans, and a lime-green tote while wrapping up some last-minute Christmas shopping.

While heading to her Santa Monica office, Jessica showcased the perfect transitional outfit: a green anorak, wrap scarf, and pastel-print denim by Citizens of Humanity. She accessorized her sunny style with a suede Jimmy Choo bag and mirrored Westward Leaning sunglasses.

Jessica's neutral Santa Monica style included a gray vest, charcoal silk tank, gray floral Current/Elliott jeans, and matching caged sandals.

Jessica's polka-dot Current/Elliott jeans lent a whimsical touch to her casual-cool LA look.

For a pedicure session in NYC, Alba swapped her colored denim for a classic jean jacket, preppy green pants, and a printed wrap scarf.

While out and about in LA, Jessica donned a printed button-down with red denim, perforated mules, and a sparkling Rebecca Minkoff crossbody bag.

Jessica went back to the '80s, wearing a Jet by John Eshaya sweatshirt-sleeved denim jacket with coral J Brand jeans, a high ponytail, and turquoise shades in LA.

While strolling around NYC, Jessica accessorized her blue-on-blue look — chambray jacket and cuffed navy trousers — with a Tory Burch fedora, tie-dye shades, and tricolor patent oxfords.

Jessica Alba colorblocked like a pro in a pink Vanessa Bruno blazer and Sanctuary turquoise jeans. She completed her LA pairing with a structured Prada bag, aviators, and a white fringe scarf.

Jessica added a touch of edge to her black-and-white combo — a plaid Madewell top, black denim, and matching ankle booties — by layering a cropped leather vest while out in LA.

The actress stepped out in LA, working a colorful striped sweater, ripped Level 99 denim, and suede buckled ankle boots. As if her off-duty style wasn't cool enough, she accessorized with a pink-and-orange Theodora & Callum scarf, a yellow Longchamp tote, and purple ankle socks for extra flair.

Before heading to her Santa Monica office, Jessica gave her printed maxi the cool-girl treatment with a denim vest, metallic gladiator sandals, and a polished leather tote.

Who said neons and pastels can't be friends? Jessica married the two in a polka-dot Splendid blouse, hot-pink and yellow wedges, a white Gérard Darel crossbody bag, and mirrored Stun shades in Santa Monica.

While some may think purple is reserved for children, the actress made a stylish case for the vivid hue, working purple skinny jeans, an Aztec-print tank, and a sleek leather bag and tie-dye shades, both by Tory Burch, on her way to her Santa Monica office.

Jessica doubled up on florals, styling printed Current/Elliott jeans with an appliqué Prada tote and adding a biker-chic touch via a black leather Two by Vince Camuto vest and matching ankle boots at the SLS Hotel in West Hollywood.