Singer and fashion designer Gwen Stefani recently revealed that her son's prayers to God played a special part in the addition of her five-month-old son to her family.

Stefani and Bush lead singer Gavin Rossdale have an 8-year-old son, Kingston, and a 6-year-old son, Zuma, and were not planning on having any more children.

Stefani, 44, said that Kingston begged his parents and God for another sibling, the Daily Mail reports.

"He [Kingston] has a direct link to God, basically," she said Wednesday in a "Late Night with Seth Meyers" interview. "He asked me, 'Mum, are you gonna have a baby? I want you to have a baby.'

"I was like, 'It's over. We're not having any more. This is our family.'"

Not satisfied with that answer, Kingston decided to take his request to a higher authority.

"'Dear God, please let my mum have a baby,' Stefani said her eldest son would pray. "'Please, God! Please let my mum have a baby!'

"And four weeks later, I was pregnant!" she revealed.

Stefani said that little Kingston has a strong faith in the Lord.

"He prays for everything. [He's like], 'Please, God, please let me have another cupcake... Yes!' He really believes," she told the talk show host.

Stefani and her husband welcomed another son, Apollo Bowie Flynn Rossdale, on February 28, 2014.

Gavin also has a 25-year-old daughter, fashion model Daisy Lowe, with singer-songwriter Pearl Lowe.

Stefani will join singers Blake Shelton and Adam Levine, and producer, singer, and rapper Pharrell Williams as a coach on the upcoming season of "The Voice". Rossdale will also be on the show, serving as an adviser to "Team Gwen". Last season's coaches were Adam Levine, Blake Shelton, Shakira, and Usher. The singing competition will begin its seventh season on September 22 on NBC.