411 Mania — Is Perry not having any fun? more info

E! Online — It's show time for Britney Spears! The pop icon kicked off her two-year Las Vegas residency on Friday, Dec. 27 at Planet Hollywood Resort & Casino in front of an adoring... more info

Topix — Ma$e is set to make a comeback in 2014. The rapper released a new song, "Why Can't We," earlier this week. more info

People.com — The 21-song set features hits, great dancers and lots of lip-syncing more info

411 Mania — Do you want to see it? more info

E! Online — Tis the season to get fun nails to celebrate the holidays! Good pals Katy Perry and Rihanna posted snapshots over the weekend of their whimsical Christmas-themed pedicures and manicures,... more info

Big Apple Music Scene — • In typical fashion, Justin Bieber’s grandparents on his dad’s side are complaining that he doesn’t buy them enough things. It’s sort of sad to think about being put under that kind of pressure. (The Stir) • 15 dating sites that we …... more info

Big Apple Music Scene — The nice talk continued when Sara visited Chelsea Lately last night and explained that she and Katy have actually been friends for a while, and there isn't any bad blood between them. More »Sara Bareilles Continues Being Awesome, Says The Katy Perr... more info

People.com — They're not mad at each other, but sometimes there's not a whisper more info

L.A. Times - Pop & Hiss — In February, the Swedish duo Icona Pop is set to begin warming up arena audiences for both Miley Cyrus and Katy Perry, whose “Bangerz” and “Prism,” respectively, are among the year’s biggest pop albums. more info