"These actors are taking things to the next level! Alia Bhat real Shahid Kapoor raw Kareena everyone at their best. Good luck! Udta Punjab (sic)," Hrithik tweeted on Sunday night.
"Thank you, brother! Big love," Shahid replied to Hrithik.
'Udta Punjab', which also stars Diljit Dosanjh, is co-produced by Phantom Films and Balaji Motion Pictures, tells the story of substance abuse in the Indian state of Punjab.
The film is slated to release on June 17.