Mischa Barton, former 'OC' star, believes she has achieved success because of her sister.
She said: 'That's how it happened. I remember going to camp with my older sister, who completely ditched me because she was 16 and I was eight and I was uncool to have around. I ended up doing all these monologues and it paid off, because some agent came up to my mom and said I should try acting.'