Jessica Simpson Shows Off Her Yoga Skills in a Peek-a-Boo Sports Bra & Wild Leggings

Both athleisure pieces come from Simpson's own line of apparel;.
Both athleisure pieces come from Simpson's own line of apparel;.

Jessica Simpson Works Out in a Peek - a - adidas Tennis Pop-Up

Heidi Somers Dishes On Fitness Career, New App

Jessica Simpson Works Out in a Peek-a-Boo Sports Bra & Wild Leggings

Jessica Simpson Launches Activewear Collection at Macy's

Jessica Simpson shows off her pert derriere wearing The Warm Up

Jessica Simpson Works Out in a Peek-a-Boo Sports Bra & Wild Leggings

Jessica Simpson Sports Bra

Christie Brinkley Shows Off Abs To Celebrate Her 70th Birthday: Photo

Jennifer Aniston, 54, Flaunts Fit Figure In Sports Bra

Jessica Simpson Sportswear Women's Encore High Rise Pocket Ankle