I can't remember what mine were.
But when I was the Rush Chair at my chapter, my dorm roomie was a Rho Chi. She was a DG but her group all thought she was a Chi O. When she came to our house she was chatting with me and after they left they said, "See, we told you we knew you were a Chi O". They were all really shocked at the reveal.
Also, one of the girls from my chapter who was a Rho Chi quietly mentioned to me at a party that the she loved a bunch of girls in her group. They thought she was an XYZ. She said she was doing all she could to make them "realize" she was a Chi O b/c she wanted them to go Chi O and was afraid they were picking XYZ b/c they thought she was one. Now, she's my sister and I respect her, but I didn't want a pledge class full of her clones!
So I sternly told her that I did NOT want her to risk us getting any sort of infraction, so I better not hear of her revealing her affiliation!!! It must have worked b/c we didn't get any of her crushes - they mostly went XYZ!!!