Celine Dion, 55, shared her stiff-person syndrome (SPS) diagnosis with the world last December, and her condition has sadly progressed since then, her sister Claudette Dion, 75, has revealed.
"She doesn't have control over her muscles," Claudette told Canadian publication 7 Jours in French, as translated by E! News. "What breaks my heart is that she's always been disciplined. She's always worked hard. Our mother always told her, 'You're going to do it well, you're going to do it properly.'"
