Canadian crooner Michael Buble has said he is "overjoyed and filled with gratitude" following the birth of his first child.
The 37-year-old singer posted a snap with his new son Noah Buble and Argentinean wife, actress and model Luisana Lopalito, 26, on social networking site Instagram.
Buble wrote: "Overjoyed and filled with gratitude at the arrival of our son Noah Buble. Born this morning, August 27th at 2.26 am in Vancouver, Canada."
One Direction star Niall Horan was quick to join well-wishers from across the world and tweeted: "Congrats to my good friends @michaelbuble @lulopilato on the birth of little baby Buble ! Soo exciting! can't wait t meet the little one"
Buble has sold millions of albums, including Crazy Love and Christmas, and won coveted Grammy and BRIT awards for his easy listening brand of music.
His eighth studio album, To Be Loved, is currently at number 10 in the UK charts after going straight in at number one in April.
Ms Lopilato first made her name as a lingerie model and in Argentine sitcoms and soap operas before starring in Buble's video for his single Haven't Met You Yet.
Although she could not speak English when they first met, the couple married in Buenos Aires in March 2011.
Buble had previously dated British actress Emily Blunt, known for her roles in The Young Victoria and The Devil Wears Prada.