Jonas Brothers on FNMTV is going down in less than JB-15 minutes!!! All 400 fans are here, we're holding down Fort Jonas Blog right in front of the stage, and it's so deafeningly loud and so blindingly bright on he set that you could probably land an airplane on the stage and no one would notice. Check out the photos of the Jonas Brothers rehearsing their FNMTV performance, and check out tons of photos below the jump... OMJ!

(Credit, all photos: Chris Polk/ Polk Imaging)



++ More Jonas photos after the jump!











+++ POWER UPDATE! We just watched the Jonas Brothers rehearse their talking points with Pete, and we saw some fan videos -- they're fantastic. Also, it's about to get REALLY FN loud in here when the fan floodgates open. Anyway, check out those photos -- we shot them less than an hour ago here at the studio, so they're Jonas fresh! The energy in the air is like waiting for a space shuttle to launch. Except it's gonna be even bigger. And definitely louder when the Jonas Brothers fans (who are waiting patiently outside in the L.A. sun -- don't worry, moms, there's lots of water) arrive!
++ UPDATE TO THE UPDATE! We're watching the Jonas Brothers rehearse on the FNMTV stage right now, and they're blowing us away! Two hours to go!
++ UPDATE! We just came from a Jonas Brothers press conference, where we were about three feet from Kevin, Nick and Joe, who sat in that order respectively from left to right. We even heard a few reporters behind squeal "Oh my God, they're so cute." Ladies of all ages love the JBs. We asked Nick how he plans on celebrating his 16th birthday. He's going to be working on set but turned down the idea of major Super Sweet, telling us instead that he doesn't like big parties. The guys also told us they're looking forward to playing golf in their free time -- whenever that happens. Oh, and Kevin, like a doting big brother, congratulated Joe on graduating high school. Aww! More to come, including a really cute photo of Nick and Pete Wentz. Oh yeah, there are already some girls hanging out near the gate of the set, screaming. I wouldn't mess with that security guy though, but you can't blame them for trying. ++
The way you can feel your birthday, prom, or a thunderstorm coming is the same way we can feel the arrival of the Jonas Brothers on the set of FNMTV. Their band just pulled up in some posh black vans, and the JBs will be here any minute!!! We stole a quick shot of their dressing room before they walk through the door to get all Jonased up. Eee!
+ Get more on tonight's FNMTV line-up and Jonas Brothers performance here! Remember, it starts at 8pm ET/PT on MTV (just to clarify, because a few of you were asking to where to watch it. Um, it's on MTV. On your television.)

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