The couple are parents to Elias, 2, and Noah, 4, who underwent treatment for liver cancer last year and is now in recovery.
"I think being a dad gives you perspective. I think really being a parent is a massive blessing," 42-year-old Bublé told E News last year. "It's allowed me to understand deeply that what I do for a living—creating music and art and getting to be a part of a fragrance or a movie—is my job. It isn't what defines me. What defines me is I'm Noah and Eli's dad."