Mischa Barton walked her dog and her long legs in a park in Los Angeles. Later on, she went out for her function in the evening. She attended the Billabong USA 2nd annual “Design For Humanity” charity event in LA. There was a Billabong catwalk show on bikinis from Jenny Han, Charlotte Ronson, Joy Bryant, Amber Valleta, Lisa Kline and Cory Kennedy. This collection was totally unique and each piece was one of a kind. Donations benefitted the Surfrider Foundation.