Marc Malkin

Add the Jonas Brothers to the list of musicians who want their own fashion line.

"I'm not saying we're the best designers in the world, but being able to make what we like, that would be so cool," oldest sibling Kevin, 20, told me the other day in Hollywood, where the trio was appearing on FNMTV Premieres. "We love dressing up and putting on different kinds of clothes."

And the Jonas empire doesn't end there.

Nick, 15, says a Christmas album is a definite possibility. "We wrote a holiday song, "Girl of My Dreams," and sang it at the Disney parade last year," he said, adding, "It was a lot of fun…Maybe there is a holiday album in our future."

The immediate future includes finishing up their Burning Up tour, releasing a new album on Aug. 12 and making their debut at MTV's Video Music Awards in September.

However, they did get some time off on Friday night. The brothers were spotted at the Rooney show at the House of Blues on the Sunset Strip, watching their former opening act from the balcony and also hanging in the music club's Parish and Foundation rooms.

Kevin, Nick and Joe, 18, returned to the road the following day for their own concert in Denver at the Coors Amphitheatre.

They're hoping Shania Twain joins them on stage one of these days for their cover of her hit, "I'm Gonna Getcha Good."

"It's fun to see the parents when that song comes on, especially the moms," Kevin said. "They're like, 'Oh my God! Wow! They're really playing our favorite song.' "