Ace vocalist Celine Dion just finished up a 16-show residency in Paris. During a concert on October 7 in the suburb of Nanterre, the singer slipped on stage while she was singing and dancing to one of her hit tracks, `Dans un Autre Monde` [In Another World]. She recovered almost immediately and got back on her feet with a great deal of poise and composure. She even gave the audience a thumbsup in the middle of the song. Later, as she paused between songs, Celine D said to those who had come for the gig, `Don`t worry.` Isn`t that cool! She`s 58 years of age, has famously suffered from a rare neurological disorder, and not just her heart, but her body, will still go on. . .