Bollywood's sweetheart Taimur Ali Khan celebrates his 4th birthday today, December 20. On the special occasion, mum Kareena wrote a heartwarming note for her darling son, along with a montage of throwback pictures of the birthday boy.

The Good Newwz actress shared the post on Instagram and wrote, ""My child... I'm happy at four you have such determination, dedication and focus on what you want to do... which is now picking up the haystack and feeding the cow..."