"Obviously, you made a big mistake," said Line Basbous, founder of the Red Heads Celine Dion fan club. "We wanted to make sure that you understand that."

The pop diva was left off the magazine's list of the "200 greatest singers of all time."

The beloved singer announced that her condition has caused her to postpone and cancel some upcoming dates in her world tour.

In a video posted to Instagram, the star shared how stiff-person syndrome is affecting her ability to sing and perform.