spring rush for sororities?

Is Spring rush a thing and if so how do you participate? Do you have to be friends of girls in houses pretty much or is it kind of a clean slate? I am sad that Fall Rush didn't work out for me the first time but I am still loving Mizzou and really do want to be apart of Greek Life. So for spring do we need rec letters and everything again? I did it all the first time but I have no clue how spring works and I would really like to be prepared!