Jessica Simpson shows off her pert derriere wearing The Warm Up

The brand is sold at Macy's. The 35-year-old recently celebrated the 10-year anniversary of her self-titled clothing line.

See Madonna's changing face over the years after unrecognizable

Jessica Simpson Photos - Jessica Simpson Interview - Music

Jessica Simpson Photos - Jessica Simpson Interview - Music

Jessica Simpson Shows Off Dramatic Weight Loss with Farrah Fawcett

Jessica Simpson Archives - The Blast

Jessica Simpson shows off her trim waist in skintight top and

Jessica Simpson's Bikini Body Pic: Celebrates As She's About To

Jessica Simpson spotted looking worse for wear after stepping off

Jessica Simpson's Sexiest Photos: See The Star's Hottest Looks

See Madonna's changing face over the years after unrecognizable