Piazza Napoleone, Italy - Justin Bieber finally returned to the stage on Sunday, performing for the first time after a frightening medical diagnosis.

The pop sensation made his big comeback, performing shirtless at the Lucca Summer Festival in Italy, and Beliebers couldn't have been more excited to celebrate his return.

The show was his first since he was forced to postpone the US dates of his Justice World Tour back in June, after revealing he was diagnosed with Ramsay Hunt syndrome, a form of facial paralysis.

Fortunately, the singer seems to have made a full recovery, and a video shared to Twitter of Bieber performing an acoustic version of his hit Swap It Out shows that he's still one of the best performers around.

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Fans also shared photos of the star smiling as he walked across the stage, clearly happy to be back doing what he loves most.

His loving wife Hailey Bieber also attended, and she shared her support in an Instagram story, captioned: "One thing I know for certain is you can't keep this guy down..."

Justin Bieber is back on the Justice World Tour, which is currently on a run of European festivals. The rescheduling of the cancelled US dates have yet to be announced.