Today Ranbir Kapoor is 33rd birthday. But he did not took leave on his birthday. He rather celebrated his birthday on the sets of "Ae Dil Hia Mushkil". Director Karan Johar posted a photo of Ranbir Kapoor on Instragram and wished him Happy Birthday. Let us tell you that even Shahrukh reached on the sets to meet him. Shahrukh told that even his kids enjoyed the shoot of the movie. He even posted a picture on Twitter. Shahrukh wrote "Seeing Ranbir and Karan together was a treat. Kids also enjoyed a lot. Thanks to the team of Ae Dil Hai Mushkil." Karan also posted saying "thank you for coming here". Also Ranbir's father on his birthday changed his profile picture to that of Ranbir. On the other hand, Neetu Kapoor posted a photo of both of them. She shared the childhood photo of Ranbir. She wrote "Happy Birthday, god bless you and stay happy". She added that she has send all the messages to RK. He is every emotional, thank you. Let us tell you that these days Ranbir is shooting for  Ae Dil Hai Mushkil in London. Last year his girlfriend Katrina Kaif has also visited him on sets. But this year she is busy shooting in London with Sidharth Malhotra. The movie is Baar Baar Dekho.