Justin Bieber

The reality star is 'grossed out' over the eldest Kardashian's bad behavior.

The mom-of-three took a little 'me time.'

Their relationship exposed!

Celebrities Visit SiriusXM Studios

See how she responded to her romance with the 22-year-old boy toy!

How everyone from Ben Affleck to Justin Bieber hide their dirtiest dalliances.

Is it too late?

Singer faces the music over allegations he ripped off his hit song.

‘He'd make our life a misery.’

Find out how she reacted!

Here’s Radar's guide to the celebrities who have shunned those who love them most.

'He loves having an older, experienced lover…it works for both of them.'

Here’s a list of stars who became a success despite an unplanned pregnancy.

Was Justin's aggressive behavior the reason?

See the stars bare just about everything in these 12 steamy snaps.

Watch the video and find out what's really happening in her love life.

These celebs got caught breaking the law in the most common way – find out!

Find out what really happened between the two stars!

The singer's rumored hookup Kourtney Kardashian may not be pleased.

Take a look back and see his transition from "Baby" to bad boy!

What happens in St. Barths stays on Radar --- see the photos!

From Justin Bieber to Sofia Vergara, count down the hottest snaps this year.

Cover your eyes! This year, celebrities dared to bare it all.

Do the many looks and styles of Justin Bieber remind you of anyone?

The reality star knows how to keep her men guessing.

Does Scott know?! Get details on their alleged hookup.

What Bieber wants, Bieber gets.

Friends say they're keeping it casual.

Actor's lies to victims about HIV status already turning Hollywood against him.

Singer spotted holding hands with her new mystery man!

The world seemed to sympathize [http://radaronline.com/celebrity-news/kourtney-kardashian-scott-disick-settlement-post-split-contract-agreement/]with 36-year-old mother-of-three Kourtney Kardashian when her hard-partying baby daddy Scott Disick left her to go on international escapades young models -- most recently 18-year-old Lindsay Vrckovnik. But now, it appears that Kardashian has found her sweet revenge in the arms of 21-year-old Justin Bieber -- just days after full-frontal photos emerged, revealing to the world just what the pop crooner has to offer a lonely single mom!

Justin Bieber looked calm, cool and collected in West Hollywood on Wednesday, despite the entire world having seen his manhood, and was even congratulated by

Find out why Toby Sheldon, who is best known for getting over $100,000 worth of plastic surgery to look like Justin Bieber, was found dead in a Los Angeles Motel Room.

Botched regular Tobias Strebel, who has shaped uncanny similarities to Justin Bieber, is reported missing.

These celebs are sizzling this summer with the hottest beach-racy bods and sultry selfies. See the sexiest summer Instagram snaps for 2015 thus far!

Justin Bieber took a break from doing whatever it is that a Justin Bieber does to take a relaxing vacation in Hawaii. Click through to see if these pics match up to the Calvin Klein ads!

Justin Bieber has been found guilty after he was charged with assault and careless driving in Ontario, Canada, last September. According to Ontario Provincial Police, the troublemaking singer was involved in an ATV and minivan accident that ended in a fight between Bieber and the other driver.

Las Vegas was the place to be Sunday night, as numerous celebs headed to MGM Grand Hotel to see what many have dubbed the boxing event of the century.

Justin Bieber Hosts The REHAB Pool Party At Hard Rock Hotel & Casino In Las Vegas

Win or lose, Floyd Mayweather is definitely going to have a good time following his history-making bout with Manny Pacquiao in Las Vegas tonight. A member of his entourage exclusively revealed the after-party plans to RadarOnline.com — and they're ridiculous!

Justin Bieber, Chris Brown and more celebs attend the NYLON Midnight Garden Party at a private residence on April 10, 2015 in Bermuda Dunes, California.

Now that Bruce Jenner’s little girl Kendall Jenner is almost all grown up, he’s having a hard time letting her go, especially with pop brat Justin Bieber hanging around. RadarOnline.com can reveal that the reality dad is beside himself over his daughter’s intimate friendship with the troubled singer!

Justin Bieber faced the music at his Comedy Central Roast that aired Monday night, and RadarOnline.com has a dozen of the most-shocking jokes of the evening.

Kendall Jenner posted photos featuring Justin Bieber from her upcoming Vogue pictorial -- which was shot by famed photographer Mario Testino -- on her Instagram page Monday.

Justin Bieber had David Arquette booted from his Las Vegas birthday party Sunday, after the pop star learned the actor had been "talking about [him] behind his back."

Justin Bieber, trying to make up for his bratty past, says that his "hard" life in show business caused him to act "arrogant" and "conceited" over the past "year and a half."

Getting cozy! Despite claiming to be "just friends," Justin Bieber and Hailey Baldwin were caught getting more than friendly in a swimming pool together.

Justin Bieber’s making hearts swoon and tongues wag in the rollout for his new Calvin Klein campaign, and RadarOnline.com has all of the sexy pics from the singer’s shoot.

Here are 40 of the biggest secrets and scandals of 2014!