Mumbai, Dec. 13 -- Wishing Meghna Gulzar on her birthday, actor Kareena Kapoor Khan on Saturday treated fans to her candid BTS pictures with the ace director from the sets of their upcoming film 'Daayra'.

Kareena also penned a sweet note on Instagram, calling Meghna a 'tigress'.

"To sum up in words the feeing I have had working with @meghnagulzar will always be less...Daayra is nothing short of one of my most special films as it marks my first with the kind, gentle, passionate, smart and ever so sharp Meghna Gulzar... and to bring to life a subject that is so exciting... To be in your direction and under your guidance has been one of my most fulfilling acts... What an honour to be directed by you director sahiba...but... on this journey...