Katie Holmes hopped in a fountain  at Washington Square Park in NYC today to film scenes for Mania Days. Her costar Luke Kirby accompanied her on the fountain run, and the onscreen duo splashed around for the cameras before they dried off and Katie headed over to pose for pictures with two little girls.
Earlier in the day, Katie and Luke took to a park bench to shoot more personal scenes, in which they exchanged several laughs and held hands. This was not the first glance of costar chemistry, though, since last week Katie and Luke got close  while filming in front of a church. Work on the romantic drama, which deals with two manic depressives who fall in love, began a few weeks ago but is not expected to hit theaters until late next year.
Katie Holmes  laughed while splashing around on set in NYC.
Katie Holmes  and Luke Kirby jumped in an NYC fountain while filming Mania Days.
Katie Holmes  looked happy on the set of Mania Days.
Katie Holmes  wrapped up in a towel while on set in NYC.
Katie Holmes  posed with two little girls on set in NYC.
Luke Kirby and Katie Holmes  got together to shoot Mania Days.