It's not the most common situation, but David Foster doesn't find anything strange about his sister, Jaymes Foster, having Clay Aiken's baby last year.
"She's very close with Clay - they're best friends," the famed composer and music producer told the Associated Press on Thursday.
"It made perfect sense to me that he'd want to have a child with his best friend."
Jaymes Foster, who is reportedly in her late 40s (some accounts say she is already 50) gave birth to Parker Foster Aiken last August 8 after conceiving the baby with Clay Aiken, 30, through in-vitro fertilization.
David Foster - who has worked with the likes of Whitney Houston and Madonna and is writing about Jaymes Foster's relationship with Clay Aiken in his autobiography, Hitmaker - considers it "a very normal situation."
The American Idol runner-up is a "spectacular father," David adds.
A month and a half after Parker was born, Aiken finally came out of the closet publicly and admitted he is gay, which many fans suspected for years. The private Clay said he could not live a lie while raising his young son. Admirable guy.
He and Reed Kelly are still together, we believe.
David Foster said that in addition to Clay's parenting skills, Jaymes, also a music producer who worked with Aiken on his last album, is "a natural mother."
Clay Aiken, who lives with Jaymes Foster when he is in L.A., has said he planned to help raise the baby, but David doesn't know their plan yet.
"They're working it out," he says. "It's a bicoastal thing."