Ranbir Kapoor is celebrating his 33rd Birthday today. In an exclusive chat with online portal Pinkvilla, Ranbir's beautiful sister and mum-to-be Kareena wished him a very Happy Birthday witha special message. Kareena said, "Happy Birthday Ranbir. And I think I have praised you a lot in fact in my Pinkvilla interview so I know you see Pinkvilla at least five times a day, so do read this interview. That’s my birthday gift to you.” Aww, The duo share a great bond!