H.H. Prince Mario-Max Schaumburg-Lippe - Avante Garde Magazine Alchemy & Masquerade Princely Ball - Arrivals at Private Location - Whittier, California, United States - Monday 2nd November 2015 (1 Picture)
H.h. Prince Mario-max Schaumburg-lippe
Photo credit: Tai Urban
Perry appeared on James Corden's 'The Late Late Show' on Monday and addressed her long-standing rivalry with Swift.