Congratulations, Olivia Wilde! The star's turning 30 today. This year's a big year for Liv as she's seven-months pregnant with her first child with partner of three years Jason Sudeikis! The former House star's style has transformed over the years. When she first hit our screens in 2003 she was a beachy girl-next-door with a rock'n'roll twist. She wore jeans and oversized knits on the red carpet and sported her in bleached blonde waves.
Now she's become one of our fashion faves and is a big fan of labels like Gucci and YSL. Known to rock a little black dress just as well as she can wow in a glittering floorlength number, she's a style chameleon. She's also equally adventurous with her hair, switching from long locks to a short lob and from dark brown to bright blonde and everything in-between (she's even had a fringe!).
Most recently Liv's become one of go-to stars for chic maternity wear. She's hit the red carpet this awards season in a series of incrediblely unique, uber-flattering and comfy-looking frocks. Our faves include her retro Oscars 2014 look, complete with turtle neck and monochrome panel and her blue sequined mermaid-like Golden Globes gown.
She might be uber glam now, but we'll always remember Liv as her bad-ass character Alex Kelly in The OC. Remember the time she snogged Marissa? We say bring back the quiff!
Click through the gallery above to see Olivia's style evolution.