Don't Miss:

Building up your summer beach body? Take a cue from Julia Roberts’s trainer and pick up a pair of dumbbells. “People are so focused on cardio that when they can’t afford a gym membership, workouts go by the wayside,” says Roberts’s trainer Kathy Kaehler told InStyle. “Five-pound dumbbell weights allow you to do circuit and strength workouts, which keep your heart rate up, increase your metabolism and help you tone.” Pick up your own for $13 at amazon.com, and get more of Kaehler’s workout tips by following her Twitter, @kathykaehler.

Plus, see more star-inspired workouts!

MORE:
• Get a Star-Worthy Middle in 3 Weeks
• Try Blake Lively’s Workout Routine
• Excuse-Proof Your Workout

Kristi Yamaguchi‘s passion for fitness goes way beyond the ice rink! The gold-medal-winning figure skater is launching a new line of activewear, called Tsu.ya. “I’ve been an athlete all my life, and I wanted my clothes to transition from the gym to being a busy mom, running errands, and spending time with my kids,” Yamaguchi told InStyle.com. “I wanted something comfortable, but functional and fashionable, too.” The 18-piece lineup includes yoga pants, tanks, and jackets ranging in price from $40 to $150, and a portion of the proceeds go to the skater’s Always Dream Foundation, which works on improving early childhood literacy. Shop the collection when it debuts at Lord & Taylor stores this September.

Plus, get star workouts—no gym required!

MORE:
• Star-Approved Workout Gear
• Celebrity Workout Playlists
• Tracy Anderson’s New Workout Leggings

Custom-cutting her celebrity clients’ pants for a better fit gave exercise guru Tracy Anderson the idea behind her capsule collection at Edition01, a body-specific line of $125 leggings created with partner Gwyneth Paltrow. “You perform better when you look in the mirror and you like what you see,” says Anderson. “These help a woman say, ‘Hell, yeah!’” And here’s another thing to say ‘yeah!’ about—now you can get 25% off when shopping for the pieces at edition01.com when you enter the code TAM25OFF at checkout. Click through the gallery to see the items and start shopping!

MORE:
• Star-Approved Workout Gear
• Star Workouts, No Gym Required!
• Celebrity Workout Playlists

Cameron Diaz has a killer physique, which is why we spoke with her trainer Teddy Bass to find out all about how the star achieves her perfectly toned bod. Click through our gallery for tips on how you can master Diaz’s workout routine!

MORE:
• Star-Approved Workout Gear
• Hollywood’s Top Juice Fasts
• Cameron Diaz and More Wear Tangerine!