Sir Elton John has reportedly been named as the biological father to his and civil partner David Furnish's baby Zachary Jackson Levon Furnish-John.
According to reports, official documents reveal that the 63-year-old provided sperm for the surrogacy.
He is apparently listed on Zachary's birth certificate as the father, while David is mentioned as the mother.
It is the celebrity couple's first baby, following an unsuccessful adoption of an orphan in Ukraine last year.
Sir Elton and David Furnish entered a civil partnership back in 2005 after 12 years together.