Soror you could try
www.greekgrams.com, www.simplygreek.com, www.ask.com (type in greek apparel) or alpha kappa alpha sorority Inc.
There should be some great links on there or go to the sorors webpages and click on the links that they have.
God bless you on your big accomplishment, that will be me in 2 years.
Much Love
Pinkice