MTV.com News — Taylor Swift, Ne-Yo, Jamie Foxx, Chris Brown, Adele and Sugarland also added to the lineup.By Gil Kaufman Kanye West and Estelle Photo: Frank Micelotta/ Getty Images Music's biggest night just keeps getting bigger. The 51st annual Grammy A... more info

ContactMusic — KATY PERRY has blasted reports she warned girls not to date her ex TRAVIS MCCOY during a recent show - insisting she was jokingly referring to DEATH CAB FOR CUTIE ... more info

MTV.com News — The singer talks to Katie Couric about her religious upbringing and her parents' pasts.By Jocelyn Vena Katy Perry Photo: CBS For anybody who thought Katy Perry's pastor parents didn't understand the rebellious attitude evidenced in songs l... more info

MTV.com News — 'A lot of girls are inspired by us, so this song is us giving our advice,' Miley tells Ryan Seacrest.By Jocelyn Vena Taylor Swift and Miley Cyrus Photo: Kevin Mazur/ WireImage Taylor Swift and Miley Cyrus are giddy about their big duet at ... more info

E! Online - Katy Perry is talking about boys again. more info

Reuters - Katy Perry opened the set to the prerecorded strains of Queen's "Killer Queen" and covered that band's "Don't Stop Me Now" as an encore. more info

Yahoo! Music — Reuters - Katy Perry opened the set to the prerecorded strains of Queen's "Killer Queen" and covered that band's "Don't Stop Me Now" as an encore. more info

ContactMusic — KATY PERRY's break-up with GYM CLASS HEROES star TRAVIS MCCOY continues to get messier - the pop star has warned others about dating her ex. The couple split at Christmas ... more info

Yahoo! Music — E! Online - Katy Perry is talking about boys again. more info

E! Online — Katy Perry is talking about boys again. But this time around, it's pretty clear she's not opening up about her split from Gym Class Heroes singer Travis McCoy. Perry... more info