Celine Dion

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In 1998, Oprah celebrated her birthday while taping in Amarillo, Texas, and some of her all-time favorite people sent warm messages—including Celine!

"I'm so happy I can wish you a happy birthday, but at the same time I'd love to say thank you to you because my family and I—we did your show, and we had such a great time," Celine said. "Keep going, girl, because you're the best."