Alpha Xi Delta. The Pen is Mightier than the Sword. Double Blue and Gold. Xi greatest sisterhood on Earth. For the ladies lucky enough to be a part of it, here's how you know you are:

1. You bleed double blue and gold.

2. There's a special place in your heart for any person affected by Autism Spectrum Disorder.

4. You cried when you watched the video of the girl with no one showing up to her birthday party

5. And definitely wrote her a card afterwards

5. Your biggest pet peeve is when someone mispronounces the "Xi."

6. You never find your sorority's letters on a key chain.

7. And telling people you're in AXiD and you get "Hmmm, never heard of it," back.

8. TFJ Tuesday.

9. You've made up a fake acronym for WAGS for instagramming purposes.

10. You don't have sisters, you have xisters.

11. Replacing the word "the" with "xi." Example: "On xi way!"

13. Whenever you see a pink rose, you get a little warm inside.

16. Being a little more obsessed with Alex and Ani bracelets than most girls because the founder is an AXiD.

17. You take great pride in that the first female CEO of a Fortune 500 company was part of your sisterhood.

18. Cora is your homegirl.

19. You know you have the best sisters in the world.