Blake Lively and Ryan Reynolds are sweeter than a spoonful of sugar, so it's only fitting that they would host a screening of Mary Poppins Returns. On Thursday, the couple joined forces for a special screening of the Disney movie at Feinstein's/54 Below in NYC. In addition to mingling with the film's producer John DeLuca and director Rob Marshall during the event, the two were also joined by their close friend and star of the film, Emily Blunt. Blake and Emily shared a cute moment as they hugged for the cameras. Of course, one of the sweetest moments of the night was when Blake reunited with her former Gossip Girl costar Margaret Colin. Blake flashed a huge grin as she posed with the actress, who played Blair's mom on the series. Aww!