Blake Lively was in NYC to film Gossip Girl on Monday, but yesterday she arrived in Boston with her luggage to start work on The Town. She was joined by her costar Rebecca Hall, who landed a role in the film following her work in Vicky Cristina Barcelona. The girls will also be joined on screen by Jon Hamm, though he's back in LA following his own trip to Massachusetts over the weekend. Yesterday also happened to be Blake's 22nd birthday, so she may have been able to celebrate with both her familiar and new cast and crew.
To see more of Blake and Rebecca, just read more.