Class Of 1991. Remember all of those great old times when you were in school? Well show some class spirit with these cool class of 1991 glitter graphics. Class of 1991 RULES! Whether you're getting ready for a class reunion, or just want to remember the good old days, these class of 1991 glitter graphics will help raise your school spirit! These images are free for your personal use for email, your phone, or to post on any website, social network page or blog.