Is anyone else confused about this:
Q #15. If I am a member of a Greek lettered organization already, may I join Gamma Gamma Chi?
We are unable to accept for membership an undergraduate who already belongs to another sorority. Graduates who have membership in another sorority are eligible to be considered; however, we hope that they will choose to discontinue membership in the other sorority in order to devote their time and attention to Gamma Gamma Chi.
I don't understand why it would make a difference whether you're an undergrad or have already graduated-letters are for life.
http://gammagammachi.org/FAQ/