Leighton Meester gave birth to her baby girl seven weeks ago. The former Gossip Girl and husband Adam Brody were reported to have welcomed their first child into the world recently and it has now emerged little Arlo Day was born on 4 August.The 29-year-old star first hinted she and her 35-year-old beau were trying for a baby during a recent magazine interview.She said: "Most people I know are starting to get married. It'll be kids next. I like the grown-up stuff. I like having a house.