sunglasses Nicole Richie gym purse hand bag tights spandex beanie joel madden studio city work out rocker leather jacket

Perhaps Nicole Richie's rocker hubby is influencing the way she dresses!

The mama of two left her gym in Studio City looking fierce in a leather jacket and black beanie. Love the rock star chic attire.

Even though we're sure Nicole worked up a sweat during her workout, the Fashion Star mentor sure keeps herself cool and collected while strutting her svelte bod back to the car.

This sexy lady is like a fine wine.