Orszag acknowledges out-of-wedlock child

The mother of Tatiana Zoe is Orszag's former girlfriend, Claire Milonas. She gave birth on Nov. 17, months after she and Orszag broke off their relationship.

Orszag has since become engaged to ABC News reporter Bianna Golodryga, whom he met in April at the White House Correspondents' Association Dinner in Washington. 

The joint statement from Orszag and Milonas said the two were in a committed relationship until spring 2009.

“In November, Claire gave birth to a beautiful baby girl. Although we are no longer together, we are both thrilled she is happy and healthy, and we would hope that everyone will respect her privacy,” the statement read.

The statement was released in response to questions about the child from The New York Post, which first reported on the story.

Milonas is the daughter of Greek shipping magnate Spiros Milonas. She is the founder of Ionian Ventures, a venture capital firm in New York.