Fashion Street Style Reese Witherspoon's Latest Post-Gym Look Proves She's the Queen of Workout Style By Kelsey Glein Kelsey Glein Twitter Kelsey Glein is a Seattle-based writer and editor who covers all things fashion, beauty, and pop culture. She was previously the Digital Editor of InStyle and is currently a Social Media Manager at a cosmetics company. InStyle's editorial guidelines Updated on August 5, 2016 @ 03:00PM Pin Share Tweet Email Photo: SMXRF/Star Max/GC Images It's official: Reese Witherspoon is the queen of chic workout style. The star was spotted getting in some fitness time in Los Angeles yesterday afternoon, where she flaunted her hard work in a sporty ensemble. For her sweat session, the mother of three wore a grey muscle tank with a very important message: "Do good." Witherspoon styled the casual top with cropped black leggings and grey and pink sneakers. A pair of purple mirrored sunglasses, delicate gold necklace, simple stud earrings, and a studded leather lanyard that she wore across her body completed her look. The 40-year-old pulled back her famous blonde strands into a loose bun prior to exercising. But this is far from the first time Witherspoon has donned a graphic tee while working on her fitness. She has made of habit of rocking similar pieces over the past few months, wearing tops featuring the phrases "Soul Searcher," "Happy Camper," "Mercury Is in Retrograde," and "Nurture Nature." VIDEO: Reese Witherspoon's Cutest Instagram Moments To see what more celebrities wear to hit the gym, click through our gallery now.