Nicole Richie  was back at the gym in LA yesterday following a weekend trip to Mexico with friends. The result of her efforts in the gym were on display at her Cabo resort when Nicole was spotted lounging poolside in a sexy black bikini  in the company of her good friend Samantha Ronson. The pair sipped drinks and grabbed lunch with pals Jessica and Ashlee Simpson  who were also vacationing in Cabo. Nicole and Jessica's friendship goes way back , and the successful pair recently had the opportunity to work together professionally on the upcoming fashion competition, Fashion Star.
Nicole Richie  arrived at her LA gym carrying her favorite juice.
Nicole Richie  hit the gym solo in LA.
Nicole Richie  layered a black, studded leather jacket over her gym clothes.
Nicole Richie  wore a red bag to the gym.
Nicole Richie  adjusted her sunglasses.