Popeater — Filed under: Music News, Katy Perry, Celebrity Holiday Sure, Z100's Jingle Ball 2010 brought some of the year's biggest celebrities -- like Katy Perry, Justin Bieber and Kim Kardashian, to name a few -- to a packed Madison Square Garden last Friday n... more info

Starpulse — Katy Perry looked a little worse for wear as she left The Roxy after watching Dita Von Teese's show, "Strip Strip Hooray" last night. The pop star was with friends, including celebrity blogger Pere... more info

411 Mania — Katy #1 for a second week... more info

411 Mania — Is Katy Perry the hottest woman in the world? Would T.I.'s album live up the hype? Would Ke$ha be 2010's breakout artist? Take a look at how the 411 Staff answered these questions and more from the first half of 2010 and judge whether their predic... more info

411 Mania — And it's impressive as ever… more info

Perez Hilton — Ha! This is amazing! Check out Russell Brand in all his glory as in the middle of rehearsals for his flick, The Tempest, he goes into a round-about, HIGHlarious improv about his character's backstory. (above) This is the man that Katy Perry gets to ... more info

ContactMusic — Katy Perry wants Todd Thomas to design her tour costumes.The 'Firework' singer - who is known for her outrageous on-stage outfits - is a big admirer of the... more info

411 Mania — Katy Perry faces Kylie Minogue and Gloria Velez battles Vida Guerra in Vs, Miley Cyrus gets high, Ke$ha is born again, Will.i.am babbles about X Factor and complains about Michael Jackson again, 5 things about Nicki Minaj and Silvina Escudero is your... more info

411 Mania — They look happy… more info

VH1 Blog — What a year, right? As we get ready to put the finishing touches on the year that was, it’s time to look back at the music videos that define the year 2010. This weekend, the VH1 Top 20 Music Video Countdown will be a supersized edition that counts... more info