Katy Perry and Taylor Swift put their differences aside in 2019, but 2020 has brought them even closer than before, with the latter heaping praise and devotion on the former for her newest musical achievement. The Evermore singer summed up her adoration for Katy's newest video Not the end of the World - succinctly - in a tweet: "THIS IS GENIUS".Taylor also gifted Katy in September when she sent the Fireworks singer a physical gift; a personalized baby blanket.WATCH: Katy Perry's daughter Daisy