As they say, the rest is history. Let's list her top accomplishments since, shall we?
She's become a staple in the modeling world, landing esteemed magazine cover spots including Cosmopolitan and In Style.
She authored a New York Times best-selling cookbook Cravings: Recipes for All the Food You Want to Eat.
She co-hosts Lip Sync Battle on Spike alongside LL Cool J.
She burned our retinas with her sizzling spot on the LOVE advent calendar.
She played a part in the music video for hubby John Legend's mega-successful single, "All of Me."
She also appeared in the video for Fergie's hit "M.I.L.F. $."
And even revealed that her breasts can talk.
That last one was a true revelation.
Help us wish celebrate her big day with some of our favorite photos of the beguiling beauty in the gallery above.