MTV.com News — We round up a few of the standout moments from Bieber's career so far.By Jocelyn Vena Justin Bieber performs on "Dick Clarks' New Years Rockin' Eve" Photo: Kevin Winter/Getty Images for DCP Over the last eight months or so, Justin Bieber h... more info

MTV.com News — Hilton even launched a Twitter topic against the 'Tik Tok' singer, whom he calls a 'trash-talking trainwreck.'By James Montgomery Perez Hilton Photo: MTV News AUSTIN, Texas — Perez Hilton has never been one to shy away from a good old-fa... more info

MTV.com News — Ke$ha Apologizes To Justin Bieber For Maxim CommentBy MTV News staff Ke$ha Photo: Splash News Online While Ke$ha and Justin Bieber got a little — when they encouraged fans to vote for which song Bon Jovi should play, and Bieber inadverte... more info

411 Mania — She calls him a "tiny little baby." more info

Perez Hilton — If Ke$ha doesn't STFU soon, she's going to lose her entire fan base! When recently asked about 15-year-old Justin Bieber by Maxim, the dirty "singer" replied: "He's such a tiny little baby! I would've loved to push him around on stage in a carriage.... more info

411 Mania — Looking hot... more info

411 Mania — Putdown in song form... more info

Idolator — It's Ke$ha like we've never seen her before: deglittered and showered! In April's issue of Maxim magazine, it seems that Ke$ha even ran a brush through her hair before this photo shoot. If you want see what our favorite Animal blah, blah, blahed to M... more info

AngryApe — The 'TiK ToK' star mocks the teen singer more info

Pop Crunch — Thanks to our celebrity obsessed society, the average lifespan of a “Digital Whore” (ie: Tila Tequila) is roughly eight months — which means we don’t have much longer to deal with Ke$ha. Ke$ha — AKA “Who Gave This Broke Bitch A Dollar S... more info