Fan footage – available above – shows the pop princess attempt to take her coat off during a rendition of hit single Everyday.
But the wardrobe change doesn't go to plan.
Her arm gets stuck in the jacket sleeve stopping her from being able to sing or dance for her fans.
But like a true pop pro she styles it out and keeps singing as a backing dancer tries to free her.
Fans whoop and cheer as the stunner continues her act but – after too much fiddling – she rushes backstage to get the problem fixed properly.