Ella looked elegant in a green mini-dress and heels as she posed alongside her suited-up dad.
The father-daughter duo also mingled at the event, posing with the 51-year-old actor's young co-star, Grace Van Patten.
It was only appropriate that Ben had his daughter tag along while promoting his movie, as the film centers around an estranged family that gathers together in New York to celebrate the artistic work of their father, played by Dustin Hoffman. Adam Sandler and Emma Thompson also star in the flick.
The Meyerowitz Stories (New and Selected) will be released on Oct. 13.