Ashley Tisdale gave her first public performance since having a nose job on Friday night – and ended up having a panic attack on stage.

The High School Musical star was showing off her new nose - still swollen after her recent cosmetic surgery to correct a deviated septum - at the Z100 Jingle Ball in Madison Square Garden.

But she admits her first post-surgery show did not go as well as she'd hoped.

She told People: "I was so out of breath, I started hyperventilating.

"They were thinking it was a heart attack. The (tour) doctor got me an oxygen tank and I sat outside the stage and breathed in oxygen until I could catch my breath."

Check out who else joined Ashley at the festive bash here.