Justin Bieber, Emma Stone, Tyra Banks and Josh Duhamel are honoring teenagers who give back to their communities.

Nickelodeon announced Tuesday that each star will pay tribute to a teen volunteer at the fourth annual TeenNick HALO Awards. It is presented to young people who are "helping and leading others."

Hundreds of millions have watched the dance and listened to the song -- most without understanding a word -- but very few have any idea what "Gangnam" is and what, if any, particular "style" it might have.

The Gangnam in the title of the global hit by South Korean rapper Psy is Seoul's wealthiest residential and shopping district, lined with luxury boutiques, top-end bars, night clubs and restaurants frequented by celebrities.

Erotic bestseller "Fifty Shades of Grey" will hit Japanese bookshelves this week, its publisher said Tuesday, hoping to repeat the breathless success it has enjoyed around the world.

The novel, which features a sado-masochistic sexual relationship between a young college graduate and a billionaire tycoon, is expected to be a particular hit among Japanese housewives, the publisher said.

Madonna drew boos and triggered a walkout by several concertgoers after she touted President Barack Obama on her "MDNA Tour" in New Orleans.

The Material Girl asked during Saturday night's performance: "Who's registered to vote?" She added: "I don't care who you vote for as long as you vote for Obama." Drawing boos in touting Obama over Republican Mitt Romney, Madonna followed: "Seriously, I don't care who you vote for ... Do not take this privilege for granted. Go vote."

From "Kate"-inspired lace dresses to towering wedding cakes -- and even British celebrants -- French brides-to-be are looking across the Channel, and the Atlantic, to make their day that bit more special.

"These past two years, we've been seeing girls pick and mix ingredients from English or American weddings," said Sophie Chastrusse-Peyronnet, who heads up a giant Paris bridal fair, the Grand Salon du Mariage, each October.

Former glam rocker Gary Glitter has been released on bail after being arrested Sunday by police investigating sexual abuse allegations against the late British TV star Jimmy Savile that have plunged the BBC into crisis.

The 1970s pop star will appear before officers in mid-December as part of the investigation police have termed "Savile and others", according to a Scotland Yard statement.

"Argo," based on a true story about six Americans spirited out of Iran during the 1979-80 hostage crisis, was the top movie in North America this weekend with $12.3 million in tickets sold, industry estimates showed Sunday.

In its second week of release, the film directed by and starring Hollywood actor Ben Affleck jumped from the second to the top spot, earning a total of $60.8 million.

Lil Wayne's management team says the rapper is on "mandated rest" after a severe migraine and dehydration caused him to be hospitalized.

In a statement released Friday, the Blueprint Group says Lil Wayne was released from the hospital treatment and will return to work soon. They added that the New Orleans-based rapper appreciates his fans' support and love.

Once upon a time a major U.S. animation studio crowned a character who was billed its first Latina princess. Then out came the big bad critics, and Disney ran away.

Some fans were pleased that "Sofia the First" could have a Latina lead -- after all, the European, African American, Arab, Asian, Native American and Mermaid communities already have Disney princesses to call their own.

Actor-singer Justin Timberlake apologized Friday for a "distasteful" video produced by a friend as a joke that critics blasted for making fun of homeless people.

The heartthrob actor posted an open letter on his website about the video, in which a string of homeless, transgender and other people wished him best wishes for his wedding to actress Jessica Biel, in southern Italy.