It’s Katy Perry day at MTV kids. In honor of Mrs. Russell Brand, who’s new music video ‘E.T.’ featuring Kanye West on the song and in the video, which premieres tonight Thursday at 7:53pm ET, MTV is launching a daylong celebration of everything Katy Perry. Beginning in the morning MTV and MTV Hits will feature Katy Perry video blocks and prior to the video premiere in the evening, Katy and MTV News’ Sway will do an exclusive video introduction and a live ‘MTV First’ interview with Perry after. Love Katy Perry. Cool.