Top 5 celebrity prom crashers: Justin Bieber, Jessi Cruickshank and more1/5Back to story April 27, 2015While Katy Perry was in Australia in 2010, a local high school happened to be holding their prom at the same hotel. Katy reportedly heard her song, “California Gurls,” being played by the DJ and she rushed into the dance to sing along to the tune. Later, Katy tweeted: “I toted just crashed a prom!” Photo © Getty
