To honor the momentous occasion, we thought we'd take a look back at Kim through her "celebrity years", transitioning from Paris Hilton's BFF and sidekick to sex tape and reality TV star and business mogul.
Of course it just winds up mostly being a glimpse at the evolution of Kim's face and her changing fashion – and also a peek at some of her boyfriend choices.
On a sidenote, Khloe Kardashian posted a sweet note to Kim on Instagram. She wrote, "Happy birthday KiKi!!!!!! I love you beyond comprehension!!!! You truly are one of my best friends. To me you are an angel in disguise. Always there for me in any way! My wish is that I give you as much in life as you have given me! Happy birthday Keeks!!!!"
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TELL US – ARE YOU SHOCKED OVER HOW DIFFERENT KIM LOOKS NOW? OR DO YOU THINK SHE LOOKS ABOUT THE SAME?
Photo by Noel Vasquez/Getty Images and Wenn.com