TMZ first reported that Turner had given birth to the couple’s first child at a hospital in Los Angeles last Wednesday.According to the outlet, the couple has named their daughter Willa.A source confirmed the Game of Thrones star and Jonas Brothers band member had become parents to Entertainment Tonight, telling the outlet: “Joe and Sophie welcomed a baby girl last Wednesday in LA and are over the moon.“The couple is already obsessed and can’t stop gloating about their new addition,” the source