People.com — The pop star played a private show at Cesars Palace while her boyfriend looked on more info

E! Online — Talk about a teenage dream come true! Katy Perry was left speechless on Monday, Dec. 30, when Fleetwood Mac frontwoman Stevie Nicks did something special for the pop singer and boyfriend John... more info

411 Mania — Check out their tweets... more info

Big Apple Music Scene — Lots of people flocked to Vegas last night to attend the opening of Britney Spears: Piece of Me and pay good money to hear the star lip sync her way through some of our favorite hits.  Katy Perry was there, but it was Miley Cyrus who did all of the... more info

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