Where did those bugling biceps come from, Joe?

The Jonas brother has obviously been pumping some iron these days, and he showed off his sexy new physique while out to lunch with his dad (see the resemblance?) in Studio City, on Wednesday afternoon.

The 22-year-old actor/musician has been hard at work trying to launch his own solo career, but it sounds like he may be re-teaming with his famous bros again soon!

Joe Tweeted on Wednesday, "Very excited for this month.. Big things coming.. I can't wait to share with all of you.. One thing.. May involve two there (sic) guys.. Hmm ;)"

But in a totally PG sort of way!

Yesterday Joe Jonas and a pal grabbed a bite to eat at Urth Caffe in West Hollywood, and the middle JoBro let his shirt do the talking when he was spotted by photographers. But what sort of revolution does he have in mind? Something related to music and fashion, or is he dipping into politics with this message?

We're sure Joe Jonas had a blast on the road with Britney Spears for her Femme Fatale tour, but he looked happy to be home when we spotted him touching down at LAX last night. Or maybe he's still smiling after that raunchy lap dance she gave him on Halloween?

And get this -- rather than getting a lift from a limo service, Joe called up his little brother Nick for a ride:

Britney Spears took control over Joe Jonas during her concert at Wembley Arena in London.

The sexy singer brought Joe up on stage and wrapped her legs around his neck while performing "Leather and Lace."

Looks like Joe is enjoying himself. Oh, those Disney folks!

Joe Jonas greeted fans and photographers outside of his hotel in Stockholm, Sweden on Sunday, and the middle JoBro tweeted, "What a great show here with @britneyspears in Sweden! Thank you for your warm welcome. I cant wait to come back already."

Joe is opening ten of Britney's European concert dates, and he's currently on his way to Cologne, Germany to continue his tour with the pop princess. As you know, Joe is promoting his first solo studio album "Fastlife", and he previously hit the road with R&B star Jay Sean for a few shows earlier this fall.

Joe Jonas has that certain je ne sais quoi, no?

The middle JoBro premiered the music video for his second single, "Just In Love," and it's a more mature side of the 22-year-old singer than we're used to seeing. (Don't believe us? Look up the Jonas Brothers' song "Year 3000.")

The vid may be more mature, but Joe hasn't turned into one of the many former teen stars who try to prove that they're now adults by getting hyper-sexual. While there is plenty of running through the streets of Paris, kissing in bed and lounging in a bathroom, Joe told E!:

"No, I'm not naked and she's not naked. But I think it's a little bit, well, I'll just say it's a little bit older than anything I've done before."

The video was directed by Jaci Judelson and is as much a love affair with the City of Lights as it is the story of a brief romance between Joe and French model Angele. As beautiful as their story is, it's sadly short - Joe walks away all by himself. But, hey, at least he's in Paris!

Joe's debut solo album, Fast Life, drops October 11. See the full music video for "Just In Love" after the jump.

Joe Jonas was showing his fans some love after dining at Katsuya in Hollywood. What a sexy blue suit!

Before his sushi dinner, the studly JoeBro hit up the 30 Minutes Or Less premiere at the Grauman's Chinese Theatre .... along with Ben Stiller, Jesse Eisenberg and Michael Lohan.

Mr. Jonas is gearing up to hit the road to join Britney Spears and Nicki Minaj for the Femme Fatale Tour. We can't wait!

See more of Joe mugging for the camera ... after the jump.

Joe Jonas must have really impressed Britney Spears!

The middle JoBro is joining Brit Brit for her entire European Femme Fatale tour, according to People.

Starting October 16, Joe will open for his childhood crush overseas. If you weren't official jealous of him before (you know, when he was dating Taylor Swift, Ashley Greene or Demi Lovato), the kid is now actually having a dream come true. He tells the mag:

"She was the first girl I ever had a poster on my wall of, and her album was the first CD I ever bought. It's so funny to think I had that on my wall and here I am about to perform with her."

Seriously. Jealous.

Joe will join the "I Wanna Go" singer for her nine dates in Sweden, Germany, the Netherlands, France, Ireland and the United Kingdom. This is in addition to the announcement last week that he'd be opening for Britney's New Jersey show August 5.

His first solo album, Fastlife, drops October 11.

Find out why you should check Joe out live ... after the jump.