Rachel Bilson walks her dog, Thurmen Murmen, and carries around a poop bag like a good dog owner on Sunday in LA.

The 26-year-old former O.C. starlet didn’t do much to fix her hair before walking her dog that morning.

Rachel appears in the latest ad campaign for her junior sportswear line, Edie Rose for DKNY Jeans. The range will debut in high-end US stores, for $19.50 to $49.50 per piece this September.

15+ more pics inside of Rachel Bilson scooping poop…