Chicago Gateway Green’s 20th Annual Green Tie Ball September 13, 2011 I can’t believe this is the 20th anniversary of Green Tie Ball! I remember when I was graduating college and wanted to get involved in one charity that I knew could allow me to make a difference. I had always heard the best party of the year was called Green Tie Ball, so I did my research and found it was so much more than that I had to get involved.