No. The Jonas Brothers do not have a sister.
the Jonas brothers are Americans, they are from the US
One, "Bonus Jonas" Frank (Franklin Nathaniel) Jonas.
The Jonas Brothers do play the Nintendo Wii! :-D I <3 Joe Jonas!
The Jonas Brothers use Gibson Guitars
No their all brothers.
Yeah Kevins is awesomeo9648 and believe me my cousin is their cousin nut not my cousin.
Sureeeeeeeeeeeeeeeeeeeee
Possibly.
No. The Jonas Brothers do not have a sister.
yes because in the movie there was a cousin named charlie
"Sons of Jonas", but Kevin came up with "Jonas Brothers".
well there last name is Jonas and they are brothers
ye, they are real brothers
"Who Inspiers The Jonas Brothers?"I believe The Bettles Inspier The Jonas Brothers That Is Who Inspiers The Jonas Brothers!I Hope I Helped!Thanks!
actually they used to, but gave it to their cousin Joe.Jonas.Rocks is the username come check club starcade for updates
Because their last name is Jonas and they are Brothers. That makes the Jonas Brothers.