Justin Bieber graced Ellen with his presence this afternoon, and—predictably—insanity ensued. From screeching girls, to Bieber's thoughts on Miley Cyrus, to talk of his hair, to a rap solo (really), it was quite a segment. Video highlights inside.

Twitter changed the algorithm that determines which topics on the site are "trending," a move that knocked perennial favorites like Justin Bieber off the list. But America's littlest hackers are so obsessed with the mop-topped rocker they've already defeated it.

The Olsen twins have sworn off partying. Lindsay Lohan throws a drink at a hockey player. Claudia Schiffer gives birth. Is Justin Bieber dating Miley Cyrus? Shaq attack! Sunday's Gossip Roundup is no junk shot.

Thank the ever-loving gods: Twitter has just fixed their worst bug. Which is: Tween hearthrob Justin Bieber's constant mocking presence in the "Trending Topics" list. The omniscient eye of the Biebs has been hidden with new math.

Guess what, tweens! Justin Bieber (and his enviable hairdo) was on Oprah today. There was screaming, sobbing—even some singing! Obviously, it was all ridiculous. Just how ridiculous, you ask? Inside, we break down the show's best (worst?) moments.

The swoop-topped popster continues to hasten his young fans' descent into teenage disillusionment. He recently popped up at Six Flags Magic Mountain, not to surprise his fans, but to cut them in the roller coaster line and snub them.

Will Lindsay playing a porn star destroy her career (more?). Jenna Jameson and Tito Ortiz are no longer fighting, physically or emotionally. Mel Gibson may have had sex with a porn producer. Sunday's gossip roundup is strangely porn-y.

Gaga lost a British lingerie company's "prototype" underwear; Robert Pattinson and Kristen Stewart are a sexual dyad; Bombshell says she banged tiger; Gabourey Sidibe was mean. Saturday's Gossip Roundup is a containment dome lowered over a pipe leaking gossip.

It's how she celebrated the National Day to Prevent Teen Pregnancy. Charlie Sheen's wife owns a sex swing. Kristen Stewart says she's not sulky. Meet LiLo's new best friend: Her 300-lb bodyguard. TGIFriday gossip.

The riot-inducing tween sensation seems to be taking over the world. If there's one thing the olds don't understand about the singer it's his silly haircut. But it may be the perfect 'do for right now.

What will today's 13-year-old boys be most embarrassed about in 2020? Probably the fact that they are all getting their hair cut like Justin Bieber, according to The New York Times. And that they are paying $175 to do so.

Hundreds of celebrities, journalists, and politicos will descend on D.C. tomorrow night to attend the annual White House Correspondents' Association Dinner. Who will be on hand? A long list of the people planning to walk the C-SPAN red carpet below.

Here's a video taken in a land called New Zealand — populated solely by teenage girls and Elijah Wood's curious genetic cloning experiments — of pop sensation Justin Bieber arriving at the airport. Kiwis go apeshit. He's a god!

She's divorcing Jesse and will raise the baby alone. Larry King is a swinger. Lindsay blames a tawdry lie on her dad, who blames Perez Hilton. Courtney Love says Gavin cheated on Gwen with her. Wednesday's gossip cometh.

[Renowned popular singer Justin Bieber in Sydney, Australia for a Teen Awareness summit yesterday; image via INF]

Today a free justin Bieber concert scheduled in Sydney, Australia had to be cancelled after a mass of teens turned into a surging wall of squealing humanity. Tonight, Justin contemplated what it meant to leave destruction trailing in his wake.

Oh boy—Michael Calderone is... teasing the upcoming Mark Leibovich story on the hellish "journalism-alternative" sweatshop that is Politico. On Twitter. The big story is about Mike Allen, as all of these things are.

[Canadian singer (got totally shut out at the Junos, burn) Justin Bieber arrives at Narita Airport in Japan yesterday (today? tomorrow?); image via Splash]

Justin Bieber (#Justin #Bieber #JustinBieber) has forgiven the president of the United States for mispronouncing his name. The conciliatory statement should stave off a Wild In the Streets sort of situation... for now.

Justin Bieber on Alexander McQueen:"I think he is very original." Reporter: "Unfortunately, he died."