UPDATE: Leighton Meester and Adam Brody secretly welcomed their baby girl back on Aug. 4, reports TMZ. The website also revealed that the stars named their newborn baby daughter Arlo Day.

TV stars Leighton Meester and her hubby Adam Brody have welcomed their first child together.

Leighton reportedly gave birth last week, says Us Weekly. No news about Baby Brody has been released -- and we expect the reclusive couple to keep tight lipped about their new bundle of joy.

The duo tried to keep the pregnancy a secret for a while. But on May 18, the Gossip Girl star was spotted out and about in Los Angeles with her growing belly -- and the news pregnancy news broke.

The under-the-radar couple secretly wed back in February 2014, after quietly dating for a few years. The brunettes first met on the set of the dramedy The Oranges in 2011.

While they were a couple, the duo filmed the movie Life Partners in 2014.

Congrats to the growing family!