Justin Bieber's infamous stache may be here to stay, Beliebers.

The Biebs tweeted a teaser trailer for his upcoming film Believe on Friday. In the clip, the pop sensation jokes that his facial hair is a symbol of manhood. What else is adult about the the 19-year-old? His taste in beverages. "Speaking of grown men, I'm drinking coffee right now," Bieber says.

He may be getting older, as his mentor Usher and mom Pattie Mallette point out, but, by the looks of this video, Justin still likes to goof-off. Check out his stair-walking "illusion."

Bieber's first film, "Justin Bieber: Never Say Never," is one of the highest grossing concert documentaries to date ($100 million) so the new movie will surely be box office gold. Believe hits theaters Christmas Day.

Who knew this group of young Hollywood stars were close friends?

Hairspray costars Zac Efron and Brittany Snow reunited on Thursday for the Los Angeles Haunted Hayride. The adorable duo, who shared a hug, were joined by Julianne Hough, Derek Hough, and Hairspray director Adam Shankman.

Derek Instagramed a shot of the musical gang, along with several other friends, captioned "Great time last night with great friends. Love this time of year." The warmly dressed group looked ready for a crisp fall night full of thrills and trills.

Efron has been shying away from the spotlight of late after it was recently revealed that he secretly entered rehab last spring for alcoholism and cocaine addiction. The former Disney star certainly looked happy and healthy during the hayride.

If anyone could use some retail therapy, it's Khloe Kardashian and Kylie Jenner.

The sisters headed to Barney's New York in Beverly Hills on Friday to check out the boutique's newest collection of designer duds. Both are currently dealing with family trauma. While Khloe's relationship with hubby Lamar Odom is on the rocks following drug use and cheating rumors, Kylie's parents Kris and Bruce Jenner split this week after 22 years of marriage. Kylie is the youngest of the Kardashian/Jenner clan. The girls hopefully had advice for each other in between trips to the dressing room. Sister Kendall joined them later.

Khloe walked out with a small bag in hand so the trip must have been a success.

Kim Kardashian and Kanye West continued to class it up with a visit to the LA Opera, on Friday night. Kim was the picture of old Hollywood glamor as the duo attended the opening night of Einstein on the Beach. Nope, it's not Verdi, folks, it's a modern, kinda wacky "opera" by Robert Wilson and Philip Glass from 1976.

The stylish stars might have chosen the opera because of its recent role in the fashion world. Marc Jacobs' spring-summer 2013 Louis Vuitton show was inspired by the unconventional opera's use of abstract, geometric images.

While Kim dressed up for the occasion with a grey wrap frock that hugged her curves beautifully, Kanye dressed down in ripped jeans. Instead, he set the bar high with his matte black Lamborghini.

In an uncharacteristic move, the reality darling wore the same outfit earlier in the day when visiting the West Hollywood Dash store with half-sister Kylie Jenner (click through to see that video).

The girls were later joined by Khloe for lunch at nearby Mari Vanna. Now that she has baby Nori's diapers to change, gone are the days of Kim changing her own outfits several times a day.

Three years after his diagnosis, Michael Douglas announced yesterday that he was in fact suffering from tongue cancer, not throat cancer.

The actor sat down with pal Samuel L. Jackson for the U.K. talk show This Morning's Male Cancer Awareness Week edition and confessed that his doctor advised him to lie about his disease.

He said, 'Let's just say it's throat cancer. ... We don't want to say it's tongue cancer. I said, 'Why is that?' He said, 'Well, if you really want to know why -- if we do have to do surgery, it's not going to be pretty. You'll lose part of your jaw and your tongue, and all of that stuff.

Worried about the public reaction, the Oscar winner fibbed to the media during his press tour for Wall Street: Money Never Sleeps.

Douglas said he will never forget the expression on his doctor's face when he located the sizable tumor while using a tongue depressor.

He said, 'We need a biopsy.' There was a walnut-size tumor at the base of my tongue that no other doctor had seen.

Now that he's been cancer-free for two years, the actor said there's only a slim, five percent chance of a recurrence. The milestone might have motivated him to make this revelation. However, he would have been better served revealing this information in May when he confirmed that his cancer was caused from the HPV virus. His rep later said that statement was taken out of context.

We've never seen him be so candid!

Kanye West stopped to fuel up his Lamborghini in Calabasas today, and the rapper calmly explained to photographers why he gets so angry with the shutterbugs that follow him and his family around.

The most interesting part?

Yeezus confessed exactly why he lost his temper and assaulted a photographer at LAX last July.

"That's the day I found out my grandfather was not gonna make it. He passed two weeks later," KW revealed.

That's just one tidbit of his shockingly rational conversation... check out the rest!

Hello hot mama! Kim Kardashian showed some serious thigh on Friday afternoon while entering her family's Los Angeles clothing store Dash. Caution: Dangerous curves ahead!

The 32-year-old reality star has been all about monochromatic earth tones as of late and this beige and olive green ensemble is no different. Wearing a form-fitting frock, creme beige sweater and nude heels, the now-blonde mom made the massive crowd gathered outside the swanky boutique go wild with her star power. Despite all the hubbub, Kim kept her composure while entering.

Kanye West's main squeeze has been all over Los Angeles this week. On Wednesday, Kim accompanied Kanye to his much-talked-about appearance on Jimmy Kimmel Live. The multi-millionaire turned heads when photogs caught the new mom pushing baby North West's stroller into the studio in a glamed up outfit, complete with thigh-high boots.

There's no bones about it -- Pete Wentz loves being a dad! The Fall Out Boy bassist was all smiles when he took his tow-headed son Bronx Mowgli to Mr. Bones Pumpkin Patch in Hollywood on Thursday. And they are a spooktacular sight!

Wearing a skeleton hoodie, the 34-year-old rocker is clearly getting into the Halloween spirit with his lil' man, whom he shares with ex wife Ashlee Simpson. The adorable twosome picked out pumpkins, enjoyed some bonding time and slid down the haunted slide. We can't tell which one of them is having more fun!

Wentz, who was married to Simpson from 2008-2011, has moved on with model girlfriend Meagan Camper. His former flame, Simpson, is now dating Diana Ross' son Evan.

Looks like everyone is doing well in the Simpson/Wentz clan!