Mumbai:- R. Balki's idea of role reversal to question age-old stereotypical notions about gender, with marriage as the canvas through "Ki & Ka", has bowled over stars like Amitabh Bachchan, Karan Johar and Varun Dhawan. The celebrities have appreciated the film and the filmmaker for taking on an issue like gender differences in a fun and zingy manner. "Ki & Ka" aims to dispel gender disparity with its story wherein Arjun Kapoor essays a house husband and Kareena Kapoor Khan is seen as an ambitious, career-oriented woman. The film, slated to release on April 1, has a cameo by Amitabh and his wife Jaya. Here's what the stars tweeted to appreciate the film's concept: Amitabh Bachchan: 'Ki & Ka' watched... Bold of Balki to say what is generally believed to have been said behind closed doors! Karan Johar: Super chemistry between Arjun Kapoor and Kareena in 'Ki & Ka'. New story, new take and zingy narrative make it a must watch! Varun Dhawan: Just watched 'Ki & Ka'. Great concept and well executed by Balki. Arjun Kapoor and Kareena are the perfect kiandka. Ayushmann Khurrana: 'Ki & Ka' is fab! Arjun Kapoor is so graceful and beautiful. Kareena is so suave and alpha. Watch this one for the much needed role reversal Aditi Rao Hydari: A need of the hour 'Ki & Ka'... And role reversals as effortless as breathing! Loved Arjun Kapoor and Kareena Kapoor..Can the ka's line up please! Athiya Shetty: Loved 'Ki & Ka'! Endearing, funny, emotional and such amazing performances by Arjun Kapoor and Kareena Kapoor! Uff, they look too good together! Punit Malhotra: Watched 'Ki & Ka'. A film that questions the fundamentals our entire society is built on! Loved the super confident Arjun Kapoor and Kareena Kapoor Nikkhil Advani: A fun take on gender differences and role reversal. Balki has a lot of fun while treating everyone to his 'Ki & Ka'.