Naomi, all kidding aside, you have some serious research to do. If you are already in college, start by looking at your school's Greek website. If you are still in high school, you might check out
http://en.wikipedia.org/wiki/Nationa...llenic_Council for a little info on the traditionally black sororities,
http://www.npcwomen.org/ for the
traditionally white sororities, or
http://en.wikipedia.org/wiki/Cultura...and_sororities for a mixed bag of other, including Asian, Hispanic, Gay & Lesbian, etc.
And then there's the service and professional fraternities...
This is why people started the jokes right away. Your question was far and away too vague. The jackets, as far as I know, are just the NPHC sororities, but if you're asking about sororities, I'd think you mean the
historically white sororities, because that's my reality. When you have a smidge more information, come back and then maybe we can help you, but remember, all of these are secret societies so there is a lot of stuff we can't/won't divulge or explain.