The Jonas Brothers - Joe, Kevin and Nick - are riding high.
Their new film, Camp Rock was a huge success Stateside, becoming the second highest viewed film on the Disney Channel after High School Musical 2.
They are also enjoying a surge of popularity in the UK, where they met by crowds of fans at the film's London premiere in September.
Their third album, A Little Bit Longer, sold more than 525,000 copies to debut at No. 1 on the Billboard charts.
They've also managed the rare feat of having two albums in the US top 10 at the same time.
Associated Press Music Writer Nekesa Moody compares the young men to other boy band phenomena like N'Sync and New Kids on the Block, but says the Jonas' are something special:
"They're not just a boy band, they have a lot of talent. And not only that, they are pretty on the eyes for all the young girls. They definitely have that scream factor."
Young girls certainly line up in screaming droves to catch a glimpse of them.
And what they're falling for is a wholesome charm.
The boys are managed by their father, a pastor who home schooled them, and each wears a purity ring - symbolising their intent to stay celibate until marriage.
All of which makes them role models to many.
"You know, we're not perfect," says Joe, "but we're doing our best and we definitely know that it's good to just live every day by itself and do your best to do what you do and enjoy it."
As to what kind of girl will win their hearts, "Just be good to mom - it's very important," smiles Nick.
"If mom likes her it's all good," agrees Joe. "I think also, just a great personality. Someone that's not afraid of what people think and can be themselves."
Since 2005, the boys have toured with the likes of Kelly Clarkson, Miley Cyrus and the Backstreet Boys, before graduating to headlining their own dates.
Even life on the road hasn't stirred up tension, let alone sibling rivalry.
"I think for us, we get along very very well and I don't think we would know what to do without each other. We're each other's best friends," says Kevin.
Life's not entirely a bed of roses though. Nick Jonas revealed he suffers from type 1 diabetes at a fundraiser for the Diabetes Research Institute last year. He was diagnosed while on tour in 2005.
The lyrics of album title track 'A Little Bit Longer' were written to help spread awareness of the condition, and offer encouragement to fellow sufferers.
The brothers reportedly give a tenth of their earnings to their Change for Children Foundation - and recently announced the charity would would be teaming up with Bayer Diabetes Care to keep spreading the word.
"I'm a diabetic so we work a lot with diabetes and research and creating awareness as well," explains Joe. "Anything we can do financially is great, but also we're focussed on being moral support for these kids as well because when they first get diagnosed they always feel very alone in the struggle and we're just trying to meet as many of them as we can and say 'It's going to be alright', and let them know we're there for them."
The condition isn't about to slow Nick down.
He and his brothers are enjoying their success and looking to the future.
"It's been an amazing ride," says Nick, "and we're just continuing to do what we're doing - having fun."
APTN