"More fun (and surprises) to come," Wahlberg teased. "Let’s go!" Donnie Wahlberg is reuniting with a key member of the Blue Bloods family. The New Kids on the Block star celebrated the announcement of his on-screen sister,

Moynahan will make a special guest appearance as Erin Reagan in the premiere and will also direct an upcoming episode of the spinoff

At least two true Reagans have reunited as CBS’ Blue Bloods spinoff continues production on its series premiere. As revealed on social media Friday morning, Bridget Moynahan is on-set in Toronto at Boston Blue,