Having reached the Arizona leg of his “Believe” tour in Glendale, USA, Justin Bieber showed true loyalty and dedication to his fans and career by performing valiantly in sickness and in health. The 18-year-old star vomited twice on stage and yet still managed to finish the concert.

Each time Bieber took a brief reprieve backstage to compose himself before returning to continue his performance. He apologised to the audience and asked them “Will you love me even though I'm throwing up on stage?” according to the Daily Mail. The audience's own performance of his songs during his short breaks, alongside their incessant cheering, suggests that they will.

After his performance, Bieber treated his fans to a photograph of him in bed on Twitter, letting them know that he was “Getting better for tomorrow's show !!!!” in Los Angeles.

Bieber isn't the only celebrity to vomit on stage, Rihanna suffered the same fate in 2011, and worse, the Black Eyed Peas' Fergie didn't quite make it to the toilet on time while on tour in 2005.

Justin Bieber will hopefully be fully cured and bringing his “Believe” tour to the UK in February next year.