We're not sure which Nicole Richie loves more: Staying in shape, or hanging with her adorable doggy Iro!
So instead of making the tough choice of picking one over the other, she decided to combine the two for a fun-filled hike!
The lovely pair were joined by Nicole's BFF Cara Santana and her cutie pie puppy (above) as well!
The group looked like they had a blast as they broke a sweat on a beautiful day at Runyon Canyon park!
And how could they not? BFFs plus exercise plus puppies is always a recipe for a good time!
[Image via FameFlynet Pictures.]