Besides hosting, Clarkson is also set to perform some festive hits at the tree-lighting ceremony. Watch Kelly Clarkson's cover of Celine Dion's "All By Myself" below. More from Billboard ...

Celine Dion announced last year she had been diagnosed ... Dion is best known for hits including My Heart Will Go On, Because You Loved Me, All By Myself and It's All Coming Back To Me Now.

Titanique was born and included Dion’s countless hits including “My Heart Will Go On,” “All By Myself” and “To Love You More.” A few years later, after the initial script was passed ...