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The Kardashian family doesn't have too many secrets.

Over the last eight years of being on television, they've revealed plenty about their personal lives. But there are still a handful of facts that not even the biggest Keeping Up With the Kardashian fan may know. 

Check out these 13 fun facts about your favorite family on TV:

13. The theme song for Kourtney and Kim Take Miami was sung by their stepsister-in-law, Leah Jenner

12. Khloe Kardashian graduated high school a year early with honors, from home!

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11. Kendell Jenner's middle name is "Nicole" after Nicole Brown Simpson.

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10. Kourtney Kardashian got breast implants as a 22nd birthday gift.

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9. At the University of Arizona, Kourtney was classmates with Nicole Richie. Plus, Kim was very close friends with her growing up. 

Kim Kardashian, Nicole Richie, Instagram

Instagram

8. Kim Kardashian once had her birthday party at Michael Jackson's home.

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7. Rob Kardashian changes his phone number "10 times a year." 

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6. Scott Disick had a half pipe in his back yard and also had long hair when he was younger. Skater boy!

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5. After North West's birth, Kim sent fake pictures of "North" to friends to test who would try to sell them to tabloids. Sure enough they tried! Bingo, high five Kim. 

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4. Khloé was in a bad car accident back in 2001, in which she actually went through the windshield.

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3. Rob Kardashian's favorite sister is Kylie Jenner.

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2.  Kris Jenner and Khloé both have the same cross "tramp stamp" tattoo. But, Khloé's says "Daddy" and Kris has Kendall and Kylie's names.

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1. Kim's biggest regret is her song "Jam."

And now you know.

Tune-in to a brand new episode of Keeping Up with The Kardashians this Sunday, March 22 at 9/8c on E!