ContactMusic — Katy Perry has amassed 50 million followers on twitter.The 'Roar' hitmaker reached the staggering milestone last week after adding a huge 18 million... more info

L.A. Times - Entertainment — Artists such as Steve Wonder, Dave Grohl and Katy Perry talk about the Beatles' musical importance amid performances for 'The Night That Changed America: A Grammy Salute to the Beatles.'Dave Grohl was on his way to rehearsals for a TV special marking... more info

NME — The boyband beat Eminem, Daft Punk and Katy Perry in terms of digital downloads, streaming and physical sales more info

Stereogum — You don’t have to be a legit rock star to get an MTV Unplugged these days. In recent years the show has hosted quite a few household names (Paramore, Alicia Keys, Adele, Mumford & Sons, Katy Perry, 30 Seconds To Mars, a very-plugged-in Lil Wayne). ... more info

Brooklyn Vegan — Juicy J, who you may have just caught during Katy Perry's weird Grammys performance, will be taking his show on the road (though presumably with less horses) for his "Never Sober" tour of the US this February/March. Along for... more info

ContactMusic — Anna Kendrick claims Katy Perry touched her cleavage at the Grammy Awards.The 28-year-old actress has revealed the 'Unconditional' hitmaker got a bit... more info

MTV.co.uk News — Footage of Fast & Furious star shaking a leg goes viral... more info

MTV.com News — Lorde, Katy Perry benefit from Grammy bumps but can't unseat Frozen. By James Montgomery more info

ContactMusic — Vin Diesel is one of Hollywood's top action stars, known for playing bad ass character's on the big screen.So it came to a surprise when the 44... more info

L.A. Times - Entertainment — Vin Diesel is a Katy Perry and Beyoncé fan. There's the video evidence to prove it. And -- pardon the pun -- it's "Riddick"-ulous.     more info