In honor of Olivia Wilde's birthday, FEMAIL charts the actress' beauty evolution from beachy, blonde guest star on The OC to glamorous cool girl, Revlon spokesmodel and star of HBO's drama Vinyl.
Pin for Later: 29 Ways The O. Shaped Our Teens The Vests Yep, Olivia Wilde right there — rocking a jeans mini and punk hairdo.
Olivia Wilde is a great actress -- look at the emotional range above! Olivia Wilde reaction gifs make Conan O'Brien shake. Sometimes Olivia Wilde is NSFW and sometimes she's on the line.
PEOPLE did a slideshow of celebs who starred in The OC, like Olivia Wilde and Chris Pratt. My favorite is the clip of tiny Shailene Woodley from the pilot. Who was your all-time best and worst guest star?