Celine Dion, Tiesto and his fiance, Annika Backes, celebrate the end of Dion’s 16-Year run at t …

Celine Dion, Tiesto and his fiance, Annika Backes, celebrate the end of Dion’s 16-Year run at the Colosseum at Caesars Palace at Omnia Nightclub on Saturday, June 8, 2019 (Wolf Productions)