transfer students

Hey! I'm in a sorority at another university, and I'm curious about Greek life at UW. I am looking into transferring here because I want to be at a bigger university, but I'm a little concerned about getting involved as a junior. As I said, I am already an initiated sister(Pi Phi!), so I'm not really looking to rush or anything, but would I be able to get involved in greek life in any other way? I honestly want to know how cliquey the sororities are at UW. I don't want to go to a university that has my sorority, if I'm ultimately going to end up feeling like a GDI. Also, I definitely don't want to know only Pi Phis, so any greek members should reply :). It would be cool to know some people at UW before I transfer, so if anyone has honest opinions please reply!
-xo