The GRAMMYs just got hotter!  After Adele‘s official announcement that she will be performing yesterday, Katy confirms her spot today.  She will join [lastfm link_type=""]Drake[/lastfm], [lastfm link_type=""]Rihanna[/lastfm], [lastfm link_type=""]Bruno Mars[/lastfm] and more.  Watch her Grammy performance from last year below.

http://youtu.be/8h3eAQAYtSs