Dion, who wrapped her 16-year residency at the Colosseum inside Caesars Palace that night, stopped by Tiesto's DJ booth to have a chat and a photo opp, and to enjoy a bit dancing — which Tiesto shared a clip on his Instagram stories on Sunday.
Earlier in the night, Tiesto showed his support for Dion by attending her big show, the finale her historic run at Caesars Palace.
Dion's concert on Saturday featured a set list full hits and the debut a new song, "Flying On My Own," a taste new material ahead the upcoming release her next studio album, Courage.
At the end the song, she declared she felt like he was "in the club!" as she flew through her performance.