Olivia Wilde on Her Beauty Blunders, Her Style Icon, and More

Olivia Wilde has an addiction . . . to changing her hair color. From jet black to bright blond, she has just about tried it all, which makes her the ideal fit as a Revlon hair color spokeswoman. Her experimentation actually started as a preteen when she embraced punk style to its fullest. "When I was 12, I started working my way through the Manic Panic line. I went through purple, green, and I really liked blue," she says. "I remember at one point I wanted to do a sunset. So, I wanted orange into red, which is hard to do crouching over your sink."

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While Olivia has stayed away from the primary colors as of late, she hasn't lost her love of experimentation. Even her fiancé, Jason Sudeikis, takes note of her sporadic changes. "I really don't go more than a month with the same hair color," she says. "So he'll tease me and say, 'Honey, it's been a week, are you sure you don't want to change your hair?'"

However, Olivia admits that one of the perks of her color updates is the makeup. "One of the fun things about changing your hair is getting to try out all these different colors. I think if you're a darker brunette, learning to contour is really helpful, and with eye makeup you can be a little bit more bold. And with really blond hair I think [it's best to] use way less makeup."

No matter the hair color, though, Olivia always leans on her makeup staples: a winged cat eye and a handy brow pencil. "I plucked off all my eyebrows because I wanted to be Kate Moss. She had the perfect wisps of eyebrows," Olivia explains. "But what you forget when you're looking at your beauty icon is that they have a completely different face than you."

Her time with the tweezers may be counted among her beauty blunders, but all in all Olivia embraces the trial and errors of life. "If I ever had a daughter I would tell her to make every mistake; go for it," Olivia says.