WriterSamir Karnik, Vivek Oberoi, Rajesh Soni Release dateAugust 13, 2004 (2004-08-13) SongsPyar Mein Sau Uljhanein CastAishwarya Rai Bachchan (Diya Malhotra), Vivek Oberoi (Arjun), Amitabh Bachchan (Uncle), Sunil Shetty (Ishaan)
Kyun! Ho Gaya Na..., released in English as Look What's Happened Now, is a 2004 Indian Hindi romance film directed by Samir Karnik starring Vivek Oberoi and Aishwarya Rai in lead roles. This was the first film of leading South Indian film actress Kajal Aggarwal, who played a small role as a friend of Aishwarya Rai.
Diya (Aishwarya Rai) is an intelligent university student with strong views on love and marriage. She spends much of her time at an orphanage in Coorg, helping her "Uncle" (Amitabh Bachchan) with the children living there. The story begins when Diya travels to Mumbai to write exams. While there, she stays with her father's friend, and meets their lighthearted, free spirited son, Arjun (Vivek Oberoi). His views on love and life are completely different to hers. The pair start spending an increasing amount of time with each other and throughout all their arguments and conversations, they soon fall in love. Diya is more open about professing her feelings, while Arjun is reluctant and does not disclose his true intentions. Diya is left feeling heartbroken.
Arjun travels to the orphanage, in the hopes of reconciling with Diya, after breaking her heart. There, he realizes his true feelings for Diya, and is eager to reveal his love for her. It is revealed that Diya is now planning to marry her childhood friend, Ishaan (Suniel Shetty). Diya and Arjun start spending more time together and once again rekindle their romance. It is later revealed that Ishaan is only just a friend of Diya's and the fake marriage was a plan made up by Uncle to teach Arjun the importance of always being true to love and following his heart.
Aishwarya Rai as Diya Malhotra
Vivek Oberoi as Arjun Khanna
Amitabh Bachchan as Diya's Uncle
Suniel Shetty as Ishaan
Om Puri as Mr. Khanna
Rati Agnihotri as Sulochana Khanna
Tinnu Anand as Malhotra
Gaurav Gera as Vinay
Rahul Singh as Banna/Ranveer Singh (as Raahul Singh)
Ajit Ahuja as Manu
Diya Mirza as Preeti
Kajal Aggarwal as Diya's friend
Jennifer Winget as Diya's friend
All lyrics written by Javed Akhtar; all music composed by Shankar Ehsaan Loy.