Similar Essentials J Brand Ready-to-Wear Aiah Leather Biker Jacket ($1395); BLK DNM Cropped Biker Leather Jacket ($853); Motel Courtney Faux Leather Biker Jacket ($130) in Black.
T-Shirt: Think fitted. You'll want a solid t-shirt that works as a wear-with-anything layering piece.
Similar Essentials T by Alexander Wang Slub Classic Muscle Tee ($89) in Black; Warehouse Military Button Satin Front T-Shirt ($44); ModCloth What's the Scoop Top ($13) in Black.
Belt: Emphasize your waistline with a not-so-narrow belt.
Similar Essentials J.Crew Enameled Belt ($45) in Black; Calvin Klein 2 1/8" Patent Covered Buckle ($42); Lauren Ralph Lauren 3" Patent Stretch Belt ($38).
Skirt: Bright yellow tartan livens up a midi skirt's modest, '50s-inspired silhouette.
Similar Essentials ASOS Check Midi Skirt ($88); Jones New York Signature Skirt, Plaid-Print A-Line Midi ($87); ModCloth Back in Session Skirt ($60).
Heels: T-strap heels complement the skirt's femininity, and the glossy patent leather offers up a little edginess too.
Similar Essentials Miu Miu Glitter Heel T-Strap Sandals ($690); Vince Camuto Tezer Sandals ($110); MICHAEL Michael Kors Felicia Patent and Suede T-Strap Sandal, Black ($105).
Bag: A sleek clutch doesn't compete with the rest of the look.
Similar Essentials Alexander Wang Prisma Flat Pouch ($295); ASOS Croc Embossed Leather Portfolio Clutch ($106); ASOS Metal Frame Clutch Bag ($16).--Tiffany Tse
Photo of Jessica Alba, courtesy of Bauer Griffin.