Academic regalia of Columbia University
The academic regalia of Columbia University are the robes, gowns, and hoods which are prescribed by the university for its graduates. As one of the oldest universities in the United States, Columbia University has a long tradition of academic dress dating back to its founding in the 18th century, when it became the second university in the country to formally adopt academic robes.
Source: Wikipedia — Academic regalia of Columbia University (CC BY-SA 4.0)