The former Miss World sent a tweet of support to the first-time actor.
Priyanka wrote: "Proud of my baby sis Parineeti Chopra! u go girl! More Power to the Chopras!! (sic)."
The former Yash Raj Films marketing executive responded: "Just saw what you wrote, thankkkk youuuuu womannnn!!!"
The actress, who is currently shooting her second film project for the production house, thanked fans for their messages of support.
"THANK YOU everyone!!! Yes, I hope Ishaqzaade is loved equally :D", wrote Parineeti.
The debut actor has received critical acclaim for her performance as brash, love-struck Delhi girl Dimple Chaddha in the con film.
> Read Digital Spy's review of Ladies v/s Ricky Bahl here
> Anushka Sharma interview: 'I have played little pranks on people'
Watch the Ladies v/s Ricky Bahl trailer below: