The 36-year-old actress, who was criticized for her unique fashion sense previously, said she opted for a tomboy look in a bid to stand out when she realised that she was not going to fit in, reported Contactmusic.
"I grew up in Sacramento in northern California. People teased me about the colour of my hair and my freckles.
"At the time I started to read Vogue, I cut my hair short, I started wearing cowboy boots and experimenting with different tomboy looks," she said.
"I have always been a fan of the Saint Laurent house, for its audacity and the emphasis it places on individuality... My love story with YSL perfumes goes back to my high school years.
"My aunt used to wear Opium and she gave me a bottle with a little bit left in it. I felt very glamorous and grown up when I put a few drops on.