"Kelly is fighting some serious hidden battles that very few people are privy to." a source in the know said of Kelly Clarkson.

KELLY Clarkson shocked fans when she canceled her first live Vegas shows – just minutes before she was due to go on stage. The much-loved singer, 43, announced earlier this year that

Hours before she was set to open her highly anticipated Studio Sessions residency at The Colosseum at Caesars Palace, Kelly Clarkson canceled her first two shows. The July 4 and 5 performances were postponed just hours before the Fourth of July show, with Clarkson citing vocal strain following a grueling stretch of rehearsals.