United Kingdom, Oct. 8 -- Celine Dion has sparked fresh concern over her long-awaited return to performing after losing her balance on stage and forgetting the words to one of her best-known songs during an emotional concert in Paris.

The Canadian superstar, 58, was performing her 11th comeback concert at the Paris La Defense Arena on Wednesday (07.10.26) when the incidents occurred, according to footage circulated on Instagram and a report by French newspaper Le Parisien.

Celine returned to live performances last month after years of treatment for stiff-person syndrome, a rare neurological condition that forced her to cancel touring commitments and left her struggling with painful muscle spasms and difficulties controlling her singing ...