Seth and Blair had a baby! Huge congrats are in order for Leighton Meester and Adam Brody, who welcomed a baby girl into the world, according to Us Weekly.
While neither of the couple's reps have responded to comment, a source told the site that Leighton and Adam are proud new parents.
TMZ then obtained the baby's birth certificate, and revealed that the pair named their newborn baby daughter Arlo Day. The actress gave birth to the little girl on August 4.
And while little Arlo Day is just a few months old, Gossip Girl fans are already plotting on Twitter how she will get on with Blake Lively's little girl James - and predicting Gossip Girl 2.0.
In another baby-related coincidence, Adam Brody's former The OC co-star Ben McKenzie has revealed he is expecting a baby with his Gotham co-star Morena Baccarin - so all four kids could unite in the playground and form some sort of weird mini Gossip Girl/The OC reunion.
Earlier, we wrote...
They're one of our favourite showbiz couples so we were thrilled to hear that Leighton Meester is pregnant and expecting her first child with Adam Brody. Nawww! Congrats guys!
E! News confirmed the news after pictures of Leighton's baby bump emerged over the weekend.
It's no surprise that Leighton and Adam have kept mum on their baby news - remember how they tied the knot in a secret ceremony in January last year? Sure you do.
Gossip Girl star Leighton recently hinted that she was feeling broody during an interview with Nylon magazine and 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. I've got dogs.'
'I started [Gossip Girl] when I was so young. And once it was over, I wanted to do things that were exciting and challenging and more me -
more my adult taste.'
Meanwhile The O.C. star Adam has joked that he wants to have a huge family with Leighton. Asked how many children they were planning he quipped: 'I say twelve. And I decide.'
Here are the snaps of Leighton with her baby bump.
With the couple's incredible genes we're putting on our money on Leighton and Adam's child being uber gorgeous, naturally.
Leighton's former co-star Blake Lively gave birth to her daughter James back in January. Could the girls put their 'feud' behind them for some playdates? We hope so!