Leighton Meester is now a mom. And she's apparently been one for over a month.
TMZ reports that the former "Gossip Girl" star gave birth to her first child on Aug. 4 in Whittier, California.
Meester and the baby's dad, Meester's hubby Adam Brody, are pretty private, so it's not surprising they let this big news slide. According to the site, which obtained a birth certificate, their daughter is named Arlo Day Brody.
The couple tied the knot in early 2014 just a few months after word got out about their engagement. They first went public with their relationship in 2012.
They previously starred together in 2011's "The Oranges."