Kareena Kapoor Khan and Prithviraj Sukumaran wish filmmaker Meghna Gulzar on her birthday. Interestingly, the two are working on the upcoming film Daayra, which Meghna is directing. The film is being produced by Junglee Pictures and Pen Studios.In the behind-the-scenes glimpses, Kareena is seen in a casual avatar while filming her parts. She shared the clicks with the caption, "To sum up in words the feeing I have had working with @meghnagulzar will always be less...