Nicole Richie Takes Harlow Madden to Bronx Wentz's Party

Nicole Richie arrived at her LA gym in style yesterday, repping her own brands. She had a Winter Kate leather jacket draped over her shoulders and House of Harlow 1960 Chelsea sunglasses on. She finished the look with her trademark black Balenciaga bag and a drink from Pressed Juicery.

Later in the day, the busy mom stepped out once again in a black Givenchy hoodie to bring her daughter, Harlow Madden, dressed in a princess costume, to a kids' bash. They were among the famous faces that gathered at The Coop in Studio City to celebrate Bronx Wentz's fourth birthday. Pete Wentz and Ashlee Simpson hosted the superhero-themed bash, though there was no sign of Bronx's aunt Jessica Simpson.