"Zoya Akhtar has a knack of dealing with human dynamics like no one else...#DDD is funny, poignant and exceptionally written....its EXCELS," he tweeted.
"Congratulations to the entire cast of #DDD...each one special and everyone together complete this beautiful film...," he added.
Featuring Anil Kapoor, Shefali Shah, Farhan Akhtar, Ranveer Singh, Priyanka Chopra and Anushka Sharma in key roles, "Dil Dhadakne Do" explores the nuances of relationships and tries to find the bond which often fades away due to professional calls.
Revolving around a dysfunctional Punjabi family and how they discover love and friendship during a cruise across the Mediterranean, the film will hit the screens on June 5.
Karan also congratulated the producers of the film along with cast for supporting Zoya's "labour of love".
"Bravo to the brilliant cast!! @RanveerOfficial @priyankachopra @AnushkaSharma @AnilKapoor #shefali @FarOutAkhtar #DDD," tweeted Karan.
"Lastly congratulations to my friends @ritesh_sid and @FarOutAkhtar for producing and supporting zoyas gorgeous labour of love!!! #DDD," he further tweeted.
The film is produced by Excel Entertainment.
