Lord Frederick Windsor and Sophie Winkleman have welcomed their first child.
'Two and a Half Men' actress Sophie gave birth to a baby girl, the 42nd in line to the British throne, at UCLA Medical Centre in Los Angeles on Thursday.
Frederick's parents Prince and Princess Michael of Kent issued a statement saying: "Lady Frederick Windsor was yesterday safely delivered of a baby girl at Ronald Reagan UCLA Medical Centre in Los Angeles. The weight of the baby was 7lb. "Lord Frederick Windsor was present at the birth.
"Prince and Princess Michael of Kent's family and Sophie's family have been informed and are delighted with the news. The baby's name will be confirmed in a few days."
Sophie and Frederick - who wed in a lavish ceremony at Hampton Court Palace in 2009 - are currently living in Los Angeles where she is pursuing her acting career and he is working as a financial analyst.
Prince Michael, 71, is a cousin to both Queen Elizabeth and Prince Philip.
He married the then Baroness Marie-Christine von Reibnitz, in 1978.
She was a Catholic who refused to convert to Anglicanism and Prince Michael, eighth in line to the throne at the time of his birth, lost his place in the succession.
However, Lord Frederick has retained his right of succession and is currently 41st in line to the throne.