Celine's Down To 47kg!

Marking the end of her 16-year Las Vegas residency, Celine Dion beamed as she partied up a storm until the early hours of the morning.

Dancing wildly to DJ Tiesto, sipping on Grey Goose vodka and rocking an ’80s-inspired mini dress, onlookers mistook the 51-year-old songstress for a woman half her age.

But behind the scenes, friends are said to be worried for Celine, fearing she’s pushing herself to the brink, with the strain showing on her increasingly gaunt frame.

Florida-based body image expert Susan Constantine tells Woman’s Day the singer likely weighs a scant 47kg.

“Her legs and knees are the same size, she’s emaciated,” says Susan. Its concerning because when a person’s body weight is that low, her resistance has to be that low as well. When you’re not getting proper nutrients, your body turns on itself and attacks organs.”

It’s been a challenging few years for the All By Myself crooner, with Celine bravely continuing to captivate her millions of fans despite the loss of her husband and manager Rene Angelil.