Thank you Centaur!!! I'm going to narrow it down for everyone so this thread doesn't drag on for days. Based on the clues and what can be eliminated this is the working list:
ADPi
AOPi
Alpha Phi
Alpha Xi
DG
Tridelta
DZ
ZTA
KD
SK
Sigma
And this my friends will be the last clue b/c it's so much of a dead giveaway. I suck at clues..... I either give nothing away or give it all away. So since I've been sitting on this for a long time I'm just going to give it all away!
I have several famous sisters. But one is very well known in North Carolina. She's may even be our US Senator......
And if you don't know that one look for one of my other well known sisters on tv.... every night......