Here's what happened to all three Jonas Brothers after the band split. Here's what happened to all three Jonas Brothers after the band split. Kevin jonas, is 25 years of age, born November 5th Joe jonas is 23, born August 15 Nick jonas is 20 born in september 16 I hope this has. We've also been working on trying to use metaphors.. Wow 13 days ago they were a lot younger: Opening Act Cheetah-licious Christmas Tour The Cheetah Girls Never Gone Tour Backstreet Boys US Tour The Veronicas Right Where You Want Me Tour Jesse McCartney Best of Both Worlds Tour Miley Cyrus — The Best Damn World Tour Avril Lavigne Facebook Tumblr Instagram Pinterest YouTube Snapchat. In December , a new song leaked on the internet, marking the first time the brothers collaborated since Camp Rock 2: The 3D Concert Experience , on February 22, For their final performance of , the three brothers performed their singles "Hold On" and "S.