Leighton Meester and Adam Brody Welcome First Child

— -- Leighton Meester and Adam Brody are parents.

The couple welcomed their first child, daughter Arlo Day, on Aug. 4 according to a birth certificate posted by TMZ.

A rep for the couple did not respond to a request for comment.

Meester, 29, and Brody, 35, met on the set of "The Oranges" in 2011 and reports of their engagement began circulating in 2013. In February, 2014, the former "O.C." star confirmed that he and the actress were married.

A very private couple, neither discussed Meester's pregnancy, though she did tell Nylon last year that she was embracing the next chapter of her life.

"Most people I know are starting to get married. It'll be kids next," she said of approaching 30. "I like the grown-up stuff."