The Kardashian sisters always have each other to turn to when things get tough or someone needs a good laugh, but they also have amazing friends! 

On this Sunday's Kourtney & Khloé Take The Hamptons, Khloé Kardashian's best friend Malika stops by to celebrate the reality star's 30th birthday. Plus, Kim Kardashian and her BFF Jonathan Cheban also make a Hamptons appearance soon! 

Now think about your very own bestie and check out the 15 signs that your best friend really is the BEST! Did they make the cut? 

15. You share the same interests. 

14. You are always on the same diet.

13. She can always think of an excuse to get you out of an awkward situation.

12. If you love your boyfriend on Monday, so does she. But if you hate your boyfriend come Tuesday, she does as well. 

11. She gives great advice for when your wifi goes out. 

10. She lets you rant about your shows, even though she doesn't even watch them.

9. She will drive for hours to find the cronut that you are craving.

8. You trust her opinion on clothes. 

7. You give her new love interest a thorough background test including ex-girlfriend names, bank account statements and credit scores.  

6. You never let her get away with stupid decisions. 

5. You have a secret language that doesn't require talking.

4. You send each other 150 pictures of hair colors before deciding on what you're going to get. 

3. You discuss your bowel movements. 

2. She supports your unhealthy obsessions with random things like Steve Carell and the word "literally."

1. She is always there to help with life's little struggles.  No questions asked. 

Tune-in to a brand new episode of Kourtney & Khloé Take The Hamptons this Sunday at 9/8c on E!