The beginning of the KP4 era?
Question is: what will Katy perform? Rise? It is nominated in the Best Producer category this year...
Or will she perform a new single? Billboard reports she may be premiering a song called "Chained To The Rhythm" featuring Skip Marley.
Katy last took to the Grammys stage in 2015, where she performed an emotional rendition of Prism album track By The Grace Of God.
Perry joins a massive lineup including Beyonce, Adele, Bruno Mars, The Weeknd and John Legend.