updated 10/28/2011 AT 9:00 AM ET
•originally published 10/28/2011 AT 9:30 AM ET
Marie Osmond was admitted to a Las Vegas hospital Wednesday night after her voice started to give out during a performance with her brother Donny, her rep confirms to PEOPLE.
Complaining of tightness in her lungs, Osmond, 52, was diagnosed with a bad case of bronchitis and released from the hospital after a couple of hours, the rep told Reuters.
The singer – and former Dancing with the Stars contestant – seemed to have a sense of humor about the ordeal.
“So the allergies went into a bronchitis,” Osmond Tweeted Thursday. “Didn’t realize it until I went to hit the high notes last night on stage. Pie Jesu was kinda P-U.”