Celebrating his birthday in style, former Gossip Girl star Chace Crawford was joined by a very special lady on his big day.

The now 30-year old actor and Blood and Oil co-star Rebecca Rittenhouse,26,  looked very happy to be by each other’s side all through his birthday bash at the London hotel in West Hollywood this weekend.

According to US Weekly a source has said that while they “wouldn’t call them official”, there still seems to be “a romance between them for sure”.

The pair have been spotted out and about together in recent times and the source also added, “he and Rebecca have been hanging out, they had great chemistry on set and he really enjoys hanging out with her.”

Almost 100 of Chace’s closest friends gathered to celebrate his birthday, including none other than Ed Westwick, or Chuck Bass as he will always be known to us.

Ed took his turn roasting Chace on the night, sharing some supposedly hilarious stories from the birthday boy’s past.

Another Gossip Girl alum, Jessica Szohr was on hand to help get the celebrations underway. Despite the fact that she and Ed were previously together, sources have said that “Ed’s totally cool with Jessica.”

While it’s been three years- we can’t believe it either, since Gossip Girl left our screens we couldn’t help but remember the first times we laid eyes on Nate. Chace, sorry, Chace.

Happy birthday indeed Mr Crawford!