"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,

Bridget Moynahan will reprise her character of Erin Reagan in the series premiere of Boston Blue, the spinoff series that follows Erin’s brother Danny ( Donnie Wahlberg) as he moves from New York to Boston. Moynahan is also set to direct an episode of the new show later in the season; she previously helmed three episodes of Blue Bloods .