Thousands of people packed the streets of downtown Princeton for Communiversity 2013 yesterday. Sunny but mild weather attracted one of the largest crowds ever for the town and gown celebration. Afterward, Princeton University students celebrated Princeton University President Shirley Tilghman at Shirleypalooza. Tilghman will retire in June. For more photos of Communiversity 2013 visit our Flickr photostream. Feel free to add your photos to the group Flickr page.