Nicole Richie slipped into her trademark bell bottoms and stopped by a friend's house in West Hollywood on Saturday. The busy mom has been hanging with her loved ones this Summer, including on Fourth of July at the beach. A busy Fall is just around the corner for Nicole, since her first House of Harlow bag collection hits stores and she plans to appear on NBC's Fashion Star with Jessica Simpson. Nicole and husband Joel's brother Benji Madden have teamed up on a joint venture. Nicole and Benji asked for relationship advice questions on her webpage, to give both the male and female perspectives on issues troubling fans. Joel Madden's new Tumblr is also in action, and yesterday he posted photos from Good Charlotte's tour and quiet family moments.