If it’s not workouts at the Aspen Club, golfing, and shopping, it’s co-chairing the Buddy Bash, throwing dinner parties, and hanging with her husband, Gary, and her gaggle of girlfriends. To maintain such an energetic existence, Stewart carries a bag of tricks.

Clockwise from top: Her Chanel bag is voluminously chic by necessity. Hand lotion from Queen B Salon, Stewart’s “home away from home,” and Mary Kaye eyeliners from good friend Nancy Rogers. Fendi sunglasses for bright days; a protein bar for when she’s too busy to stop for food. Animal prints add some sass to both her iPhone case and reading glasses. The makeup bag holds a brush and rouge—“for looking sun-kissed when you aren’t,” Stewart says—and Nars from the CosBar for when she prefers a touch of tan. Bioderma tinted sunscreen keeps the real rays from hurting Stewart’s skin. A purse holder lets her hang her bag from a table. Amore Pacifica color-control formula from the CosBar—“all the girls are using it.” Altoids, because she “loves iced coffee but not iced-coffee breath.” A stray golf tee from the links. The Fitbit device tracks Stewart’s movements and transfers the data to her scale and computer. Stewart’s wallet—as bright and colorful as her personality.