Jonas Brothers' fan disbelief

Vocalist Joe Jonas of the band Jonas Brothers performs during the finale of "American Idol" at the Nokia Theatre in Los Angeles May 21, 2008. [Agencies]

The Jonas Brothers say fans often don't believe they are related. The 'S.O.S.' singers - brothers Kevin, 20, Joe, 18 and Nick, 15 - have revealed their fans continually ask whether they are actually from the same family after rumours surfaced claiming they are not related.

Kevin said: "People seriously ask us all the time, 'Are you guys really brothers?' " Joe added to Rolling Stone magazine: "It's like, no, we named our band Jonas Brothers just for fun." The trio also spoke about their love lives, with Joe admitting he still finds it strange when he hears other celebrities are attracted to him.

He explained: "It's funny when you find out there are other celebrities with crushes on you - like when I read that Lauren Conrad from 'The Hills' liked me." Nick - who previously admitted he was "honoured" when he was romantically linked to 27-year-old US socialite Kim Kardashian - revealed he is still "very close" to Miley Cyrus, who he was rumoured to be dating.

He said: "We were neighbours when we were on tour together. It was good. Just really close. But it would crack me up .I would read these stories online, people saying things that were completely untrue."