Buble's representative tells The Associated Press that Vida Amber Betty was born Wednesday in Vancouver. She is 6 pounds, 1 ounce.
Buble and Lopilato have two sons, Elias and Noah. Lopilato, an Argentine TV actress, posted a photo of her baby girl's hand Thursday on Instagram.
Buble's rep says the family is "beyond overjoyed."
Vida's middle names are in honor of her parents' mothers: Amber is Buble's mother's name, while Lopilato mother's name is Betty.
Buble, who is Canadian, is a four-time Grammy winner with hits like "Haven't Met You Yet."
Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.