The Haven’t Met You Yet hitmaker released his 11th studio album earlier this year and it went straight to number one on the UK Official Chart.
Luisana gave birth to the couple’s fourth child last month and the pair individually took to their social media accounts to share the news.
She wrote: “From love comes life, light and her… our baby Cielo Yoli Rose Bublé.
“You finally arrived in our lives with your 3,8 kg!!!”
The couple were engaged in 2009 and were married two years later in 2011.