Southern grads to wear caps, gowns made of recycled plastic Southern grads to wear caps, gowns made of recycled plastic Advocate staff report Nov. 08, 2013 Comments Southern University’s fall graduates will receive their diplomas while wearing caps and gowns made from 100 percent post-consumer recycled plastic bottles. The caps and gowns were organized by the Student Government Associations, Campus Bookstore and Student Affairs. Other colleges and universities have moved to gowns and caps made from recycled plastic. These will be the first Southern graduates outfitted in recycled material. Each gown is made of around 23 plastic bottles. Essentially, Southern students are helping to keep these bottles out of the landfills. University Campus Bookstore Store Manager John Dyer took the idea of going green with the caps and gowns to Vice Chancellor for Student Affairs Brandon Dumas and SGA President Simone Bray after attending a Sustainability Week event held at Southern.