Joe Jonas tee shirt muscles jeans sunglasses
Joe Jonas tee shirt muscles jeans sunglasses

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 ;)"