sunglasses Nicole Richie purse gym sneakers leather jacket

Dose she ever take a day off?

Nicole Richie stepped out looking chic in her usual head-to-toe black gym ensemble -- complete with matching Balenciaga bag -- as she chatted on her cell phone after a lengthy workout at the gym, on Monday.

The busy mama has been planning a huge Thanksgiving Day feast at her home with hubby Joel Madden, and it's sure to be a "chaotic" event.

Richie told E! News of the daunting dinner: "I have a big family on my side, Joel has a big family, so we're having everybody over at my house and it's going to be extremely chaotic but so much fun."