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Nicole Richie, MET Gala

Stephen Lovekin/FilmMagic

Nicole Richie is only 34 today and yet it seems as though she's undergone enough style transformations for a lifetime!

The TV star has more to celebrate this year than the mere passage of time, too: Recent accomplishments include returning to VH1 with a second season of Candidly Nicole while also expanding her design house and maintaining her status as a fashion icon, always the first one to dye her hair or experiment with a different silhouette.

Candidly Nicole started as a web series based on Richie's witty Twitter feed and now details her daily adventures, from parenting and giving fashion advice to parallel parking.

Nicole Richie, Fashion Police

Jeff Kravitz/FilmMagic

We all remember Nicole's party-girl days while filming The Simple Life alongside partner in crime Paris Hilton, but she has long since turned over a new leaf to become a hands-on wife (to rocker Joel Madden), mom and businesswoman. In fact, she could only spend a day at New York Fashion Week this month because of daughter Harlow and son Sparrow's school schedules.

Having it all takes a fair amount of work, we'd say, so we're thinking Nicole Richie deserves to do some celebrating tonight! For our part, in honor of her 34th birthday, we present you with dozens of examples of Nicole's ever-evolving style and risk-taking looks on the red carpet through the years: