Biel has come a long way from her days as the troubled Mary Camden. She's had a diverse film career, doing everything from comedy to horror to action to drama.
Her more dramatic films include The Illusionist and her action films include Stealth and Next.
In what has been seen as an effort to break away from the goody-good world of 7th Heaven, the actress famously posed topless for Gear magazine in 2000. She was 17 years old.
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She has several movies in the works, including The Tall Man and Total Recall, which also stars Colin Farrell and Kate Beckinsale.
She also has a very important ring on her finger. Longtime boyfriend Justin Timberlake popped the big question over a winter holiday in Montana. The proposal was confirmed by none other than Timberlake's grandmother, according to an Us Weekly report. Aw!
Here are photos of Biel throughout the years.