Mr Kapoor on Friday tweeted a photograph of himself with Priyanka's mother Madhu Chopra from the event to launch a song from the film.
Praising the actress with whom he worked in Dil Dhadakne Do, Mr Kapoor wrote:
Ventilator will reportedly have a cameo by Priyanka, who is currently shooting for her American TV series Quantico in New York.
The film has been directed by Rajesh Mapuskar, who previously directed Ferrari Ki Sawaari, starring Sharman Joshi and Boman Irani.
Priyanka, whose Hollywood film Baywatch will also release soon, was recently spotted at the New Fashion Week.
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