AceShowbiz - Kelly Clarkson underwent emergency surgery to remove her appendix after hosting the Billboard Music Awards in Las Vegas on Wednesday night, May 01.
The singer had been suffering with appendicitis for days, but was determined not to let her health woes ruin her big night at the MGM Garden Arena, where she hosted the three-hour ceremony and performed twice.
But, on Thursday morning, she checked into a Los Angeles-area hospital for the operation, according to Entertainment Tonight.
At press time, it was reported the "Since U Been Gone" singer is resting at home ahead of her return to U.S. TV talent show "The Voice" on Monday.
As well as performing her new track "Broken & Beautiful" at the Billboard Music Awards, Kelly won rave reviews by kicking off the ceremony with a music medley of the last year's biggest hits and a brief rendition of Madonna's "Material Girl".
Clarkson first hosted the Billboard Music Awards last year (18) and show bosses were so impressed they invited her back.
It's a very busy time for the singer - as well as judging and mentoring on "The Voice", she recently premiered her new animated movie "UglyDolls", and she's preparing to host her first TV talk show later this year. A teaser for "The Kelly Clarkson Show" debuted during the awards show telecast on Wednesday night.