What's wrong with Bieber?

Justin Bieber is really committing to his acting — so much so that it landed him in the hospital Wednesday.

According to E! Online, the 16-year-old superstar developed breathing trouble while filming scenes for his upcoming appearance on "CSI."

But never fear, Beliebers: The Best New Artist Grammy nominee is just fine. His breathing trouble was apparently caused by an allergic reaction, for which Bieber received insta-treatment at Providence Saint Joseph Medical Center in Burbank, California, on Wednesday evening.

"He is fine," Bieber's rep told E! on Thursday (January 13). "He had a mild allergic reaction while they were wrapping up last night on the set of 'CSI.' His doctor met him at the hospital to make sure everything was OK. He was released within the hour after his doctor declared him fine. He is back on set working today. All is well."

[Via:  E! Online]