Drew Barrymore calls her best friend Cameron Diaz "Poo Poo" and has known her since she was 14 years old.
Child star Drew and Cameron have been close pals since they were teenagers and Drew - who claims she doesn't have a lot of famous friends - revealed she still uses the unusual nickname for Cameron.
She told Marie Claire magazine: "I've never felt comfortable with this, sort of, camaraderie of famous people. I've known Poo Poo [Cameron Diaz] since I was 14 years old. We just happened to know each other before her career started, and I was working in a coffeehouse trying to refigure out my life. So in a weird way, it doesn't even count with us."
Drew - who has daughters Olive, three, and Frankie, 22 months with her husband Will Kopelman - also revealed that she leaves the glitz and glamour of Hollywood behind when she is not working.
She said: "I went to parent's night, and I wore some lipstick and concealer, and I thought the people at school looked at me kind of differently. I normally come with acne, and Ugg boots, and I thought they were like, 'Oh that's nice, she made a little bit of an effort.'"