Celine Dion premieres the much-anticipated return of her headline residency show at The Colosseum at Caesars Palace on August 27, 2015 in Las Vegas. WireImage It is not yet known how long the ...

Celine Dion's desperate desire to perform while she fought a rare neurological disorder once pushed her to regularly take up to 90 milligrams of Valium a day, she said — doses that could've been ...