Following Willa's arrival, a source told ET that Jonas and Turner's connection has only gotten stronger.
"Sophie and Joe have named their daughter Willa. The couple's bond has gotten even stronger since the addition of their daughter," the source said. "Although circumstances are different right now because of the [coronavirus] pandemic, Joe was there for the birth of his daughter."
"The couple is happy they now have time to spend at home with their daughter and get used to their new life together," the source added.
Watch the video below for more on the couple's growing family.