Union J's JJ Hamblett Jumps Off Stage at Fusion Festival 2014!

Okay, so not actually off the stage — but JJ Hamblett is still in the air!

The 26-year-old Union J singer joined band mates Jaymi Hensley, Josh Cuthbert and George Shelley during the 2014 Fusion Festival in Birmingham, England on Sunday afternoon (August 31).

Just the day before, the band rocked out at Blackpool Illuminations.

“I sometimes wear shirts around my waist and one time it came loose and fell down,” Josh dished backstage during an interview about his most embarrassing moment. “I didn’t realise and as a result tripped over this shirt and fell flat on my face on the stage in front of 5,000 people.”

15+ pics inside of Union J…