Justin Bieber’s new Christmas album, “Under the Mistletoe” is more “seductive” than past recordings because “vocally, his balls have dropped,” explained his no-nonsense manager, Scooter Braun, to Billboard magazine this week.

Proving he’s growing up fast, the 17-year-old’s first release from the album, “Mistletoe,” is sung a few octaves lower than his hit “Baby,” released in January 2010. His holiday album, out Nov. 1, includes collaborations with Chris Brown, Usher, Boyz II Men and Busta Rhymes.

But his cover with Mariah Carey of her hit “All I Want for Christmas Is You” was most challenging. Carey agreed to do the duet, as long as Bieber sang in her original high key. “That was the hardest song to do,” Braun told Billboard, adding, “A year ago that would have been no problem.” Bieber also admitted, “Yes, that was high. But I grinded it out, and we got it down.”

Bieber will close the holiday season by performing in Times Square on “Dick Clark’s New Year’s Rockin’ Eve With Ryan Seacrest.”

NEW YORK POST

Move over, Tom Selleck. Justin Bieber is set to join the mustache club.

The Biebs first sent shockwaves through the ‘Tween world when he shored his signature locks in late February. Now, the Canadian superstar – who turned 17 on Tuesday — is ready to add to his swagger with a bit of manly facial hair.

Justin tweeted today:

“I’m not shaving for a month so you all can see my mustache… I’m pumped!

Can’t wait to see it.

HOLLYWOOD NEWS

R&B star Usher has urged teenage pop sensation Justin Bieber to make sure his voice doesn’t change too much as he grows into a man. The Yeah! hitmaker has been mentoring the 16-year-old since they met in 2008.

And now, Usher has warned the teenager to look after himself. “We’re taking the right steps to make sure that he didn’t lose too much (ability to hit high notes). It’s all about what you eat and really just taking care of yourself,” the Daily Star quoted Usher as telling Access Hollywood.

So JB has confirmed he’s going through puberty. Woo hoo! There’s no doubt he’s changed a lot in the last year. He looks older. His voice is lower and raspy now. Even a simple picture comparing him now and this time last year shows a big difference in his looks. The eyes have gotten sexier. The lips have gotten sexier. And just about everything has gotten hotter don’t you think?

To show you how much he’s changed in exactly one year’s time, I dug out an old interview which I really like that took place exactly one year ago today, June 22, 2009, at The Bert Show on Q100, a local radio show in Atlanta.

If you’re a new Belieber then this is one interview you have to watch. There’s a lot of history in it.

Oh I’m gonna miss that sweet high pitched “One Time” voice. 🙁  But I’m looking forward to see how Justin Bieber THE MAN will look and sound like this time next year. HAWT!