Stranger Things have sent their congratulations to co-star David Harbour after he tied the knot to Lily Allen.The pair confirmed yesterday (September 9) that they had married in Las Vegas, sharing a number of pictures from the do, which included an Elvis impersonator and eating at In-N-Out Burger.Harbour's co-stars have shared their reactions on his Instagram page, with Mike Wheeler star Finn Wolfhard writing: "INANDOUT4LYFE".