Welcome to the website of Sigma Sigma Sigma: Epsilon Omicron Chapter at Illinois State University! Since 1898 Tri Sigma has helped women build character, friendship and leadership. We are all so thankful to be apart of this amazing sisterhood. Our sisterhood is a bond you will carry with you forever and memories to last a lifetime. We hope from our website you can see all of the amazing things the women in our chapter are doing and how we are living through our values everyday.