Sister Associations: What is the Purpose?

[discrete1]

I am a neo, therefore I am new to the Greek world. I am from Virginia. This is my first time hearing that the Kappas and the Sigma Gamma Rho ladies claim to be affiliated. That is fine if they have their own thing going on, but it is knew too me. I am a ZETA lady, and I always new that we were the only sorority constitutionally bound to a fraternity before I became greek. At the college I attended, it was rumor that DST and the Ques were a brother/sister organization, the Kappas and the AKA's, but never did I hear about the Kappa's and the Sghro's. I have love for all of my greek sisters and brothers.