On January 12, 2018, Adele attends Celine Dion's show in Las Vegas, Nevada.
On January 26, 2018, Celine Dion posts this message on her Instagram account with a picture of Adele and her.
I had a pretty rough time during the last couple of weeks...a lot of people have been hit with cold and flu bugs... but I'm doing much better now. Wasn't able to do all my shows, but was thrilled that Adele came to one of them.... I love her so much!!Celine