MTV.com News — The My World Tour brought Bieber fever to the Nokia Theatre Tuesday night.By Kelley L. Carter Justin Bieber performs in Los Angeles on Tuesday Photo: Robyn Beck/ AFP/ Getty Images LOS ANGELES — The countdown started early in the night for... more info

VH1 News — Justin Bieber's My World Tour stopped at the Nokia Theatre in Los Angeles on Tuesday night. more info

MTV.com News — 'I wanted somebody who was on the pop-electro sound already,' Kaskade says of choosing Martina Sorbara as his collaborator.By Akshay Bhansali Kaskade Photo: MTV News Earlier this year, progressive house-music producer Ryan Raddon — known ... more info

MTV.com News — Casey James, Andrew Garcia, Katie Stevens also sound better on Newark stage than they ever did on TV.By Jim Cantiello Jim Cantiello and Lee DeWyze Photo: MTV News NEWARK, New Jersey — Fans of all ages donned their finest homemade puff-pai... more info

Perez Hilton — LOLs! Perez and JB, after his Los Angeles concert on Tuesday night. The show was even more fun than this pic! We were truly impressed! Kid's got swagger! A great show to put on for his very first tour! Here's to more from Justin Bieber in the future!... more info

MTV.com News — 'We're all running into each other, bumping each other in the head on accident,' one fan tells MTV News at the Nokia Theatre.By MTV News Staff Justin Bieber performs in Los Angeles on Tuesday Photo: Robyn Beck/ Getty Images A gaggle of Just... more info

Perez Hilton — She didn't inherit her momma's vocals, but she sure got her good looks! Miz Selah, the daughter of Lauryn Hill, made a YouTube video of herself singing a Justin Bieber jam! She is a gorgeous child, but she might want to think about taking after her m... more info

Mjsbigblog — When MTV News caught up with Kara Dioguardi and Randy Jackson at last night’s VH1 Do Something Awards they asked the  duo how they felt about Idol’s decision to lower the age limit for auditioners from 16 to 15. “I think diff... more info

Idolator — Cody Simpson fans not able to pitch a tent and catch his Camplified tour dates can head over to the organization’s blog to see a batch of pics of the Aussie tween performing live. The “iYiYi” crooner also gave a few soundbites to Popstar! magaz... more info

MTV.co.uk News — Justin Bieber has revealed that he thinks Lady GaGa is an 'incredible artist.'Bieber, who dethroned GaGa as the most watched artist on YouTube last week when his video for Baby toppled Bad Romance... more info