But long after "Burnin' Up" hit Radio Disney and Camp Rock premiered on Disney Channel, Nick and the guys have evolved in more ways than one. Kevin is a father and husband while Joe is the front man to DNCE.
As for Nick, the newly engaged Hollywood star continues to prove on his 26th birthday that he's the ultimate trailblazer of the popular trio.
It started at just seven years old when Nick secured a Broadway musical role in Les Misérables and Beauty and the Beast. Fast-forward to 11 when he wrote his first song that eventually turned into a record deal with Columbia Records at just 12 years old. And on September 5, 2005, Nicholas Jonas was released proving he was way ahead of the music game.
The front-page headlines, media scrutiny and fandom didn't really begin until the Jonas Brothers came into the picture. But in October 2013, the group announced an indefinite hiatus to pursue personal projects.
That's when Nick really stepped up to the Hollywood plate and proved he was going to be more than just another boy band member.
In addition to landing the lead role in the Broadway production of How to Succeed in Business Without Really Trying, Nick knew he had to redefine himself.
"The challenge was, 'How do we educate people on who I am as a 21-year-old guy, as opposed to the 16-year-old kid they are familiar with?'" he recalled to American Way.
As we learned from other stars, the transition from boy to man is a marathon and not a sprint. But over time, Nick began switching his sounds with his solo albums. He secured roles on the small screen that allowed to share a different side of himself. And yes, he took off his clothes for Flauntmagazine.
"There are songs on my record that I want people to have sex to, and songs people can listen to when they're pissed off. And I think that's the beautiful thing about music: that in those moments, you hear it and it elevates the scenario," he shared with the publication after posing in Calvin Klein boxer briefs.
While the photos may have grabbed the attention of some fans, it was his talents on and off stage that continued to keep fans intrigued.