London: Socialite Nicole Richie says her mood dictates her style.

The 30-year-old is a regular on "best dressed" lists, but admits how she dresses depends on how she feels.

"It all depends on my mood for the day that I'm filming. I don't have my outfits planned out at all, it really just depends on my mood and where I am on that day," a website quoted Richie as saying.