Lady Gaga vomited four times during a performance in Barcelona.

The singer was physically sick as she performed her track "Edge of Glory," having to stop at the top of a set of stairs during her dance routine to throw up. The pop star battled on with her performance, but carried on vomiting, as a backing dancer tried to cover her from view.

"I went backstage and vomited, and I did not want you to see this ... It happens to me sometimes," she then told the crowd.

The "Bad Romance" hitmaker took the incident in her stride, posting a link to it on her Twitter page, writing, "Was praying nobody saw but actually its quite a good laugh if u need one! Check out Lady PukeGA doing Swan 'Vomit' Lake (sic)."

She also showed spirit when fans poked fun at the singer's recent weight gain at the same show, throwing sausages on stage at her. "SPAIN, you took the p*** outta me. Thats some hard bodied pop stuff. I'll never forget tonight Barcelona. FOREVER' (sic)" she wrote.