Ed Sheeran Crashes Katy Perry's Interview — And The Chained To The Rhythm Singer Flips Him Off!

What a weird interview.
While promoting her latest single, Chained To The Rhythm, on BBC Radio 1's Breakfast Show, Katy Perry received a surprise guest in the form of Ed Sheeran! How? Why? What?
Well, it all started when, the pop star saw Sheeran walking past the window of the studio (where he was busy covering Little Mix btw) -- and flipped him the bird for keeping her off the number one spot. However, this exchange motivated the Shape Of You singer to totally crash Miz Perry's interview -- whe