Keenan Cahill is one of the coolest 17-year-old we have ever met! The kid got his start by lip-syncing to famous music videos and now he’s shooting a video with The Wanted. Plus, he just hung out with Justin Bieber and he stops by HollywoodLife.com to tell us all about it!

Watch our video to get the full scoop that you won’t want to miss!

— Chloe Melas

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YouTube star Keenan Cahill is known for his hilarious lip-singing videos with celebrity guest appearances from some of the biggest stars in the music industry. He had all of us in stitches when he worked with 50 Cent, LMFAO, Katy Perry, and the cast of Glee Live, and now he told Hollywoodlife.com exclusively that he is going to work with pop-sensation Justin Bieber when his new album is released!

“Definitely in October hopefully it will pan out. He said around October when his album comes out he wants to do something,” said Keenan told us at the Staples For Students/DoSomething.org Campaign at the Globe Theater in Universal Studios Aug. 7.

Get ready Beliebers, October is just around the corner! We knew Justin has been working hard on new music, but we are ecstatic to learn that his fresh beats will hit the airwaves in fall! To promote Justin’s new album, the YouTube duo will perform one of Justin’s upcoming songs instead of doing a parody of one of his classic hits.

“A new song, a new song on his album…” confirmed Keenan when we asked what fans had to look forward to.

With Justin’s latest funny-man stunts such as coning and planking, we’re sure that his video with Keenan will be a hit! Especially because Justin achieved his celebrity status on YouTube like Keenan! Tell us what YOU think? Do you think a video with Justin and Keenan will be funny?

Nicole Fukuoka, with reporting by Russ Weakland

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You’ve probably seen Keenan Cahill’s other videos on YouTube, but his new cover of Katy Perry’s ‘Last Friday Night (T.G.I.F.)’ is epic! Dianna Agron, Harry Shum Jr., Darren Criss and Jenna Ushkowitz are all backup dancers!

Throughout the last year, Keenan Cahill has become a major YouTube sensation known for his lip sync covers to today’s most popular songs. Even though the Illinois teen (who suffers from Maroteaux-Lamy syndrome) has had some pretty awesome A-list guest stars (ie: 50 Cent, David Guetta and more), we’re loving his latest video starring none other than Glee stars Dianna Agron, Harry Shum Jr., Darren Criss and Jenna Ushkowitz as backup dancers!

Check it out and tell us which Keenan video is YOUR favorite!

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The Chicago teenager joins the electric hip-hop group at one of Las Vegas’s biggest clubs for a Memorial Day Weekend gig!

Keenan Cahill, 16, spent his Memorial Day Weekend rocking out with Grammy Award-nominated band LMFAO for an eclectic set at Tao in Las Vegas.  The two were joined on stage by DJ Vice to perform the band’s hits “Party Rock Anthem” and a slightly-altered version of their debut single “I’m in Miami B***h” to better suit their Las Vegas audience.

Before getting career advice from actor Wilmer Vanderamma, Keenan had an exquisite dinner consisting of traditional Asian cuisine at the club’s connecting restaurant.

The 10,000 square-foot venue was definitely big enough to contain the young internet sensation who blew up on the scene last year on YouTube by posting videos of him lip syncing to popular favorites “DJ Got Us Fallin’ in Love” and “Teenage Dream.”

The club’s vibrant-lit lounge and elegant plush couches are sure to accommodate Keenan and other guests in the future!

Watch behind the scenes video of Keenan with LMFAO!

–Michael Emer

Click here to view the embedded video.

Click here to view the embedded video.

HollywoodLife.com caught up with Keenan, one of the biggest YouTube stars of 2010!

Keenan Cahill blew up in 2010, becoming a YouTube star after recording videos of himself lip-syncing to popular songs in his bedroom like Katy Perry‘s “Teenage Dream.” And things got even crazier for Kennan when he made a surprise video with 50 Cent, which premiered on an episode of Chelsea Lately!  HollywoodLife.com got a chance to catch up with Keenan at The Lott in NYC where he was hosting a Toys for Tots event, and he told us EVERYTHING we wanted to know.

Here are six things you didn’t know about Keenan Cahill:

1. Megan Fox is his celebrity crush.
2. He calls his newfound fame “a dream” and says, “I feel like Justin Bieber.”
3. He went to France for the first time this past Christmas.
4. He had a great time working with 50 Cent. “He was really nice and really funny on set,” Keenan tells us.”
5. Katy Perry is someone he really wants to work with in the future. “She’s well aware that I’m trying to find her,” he tells us.
6. He tries to make one video every weekend.

— Pierre Reynolds