Shahid Kapoor and Mira Rajput's son Zain turned four on Monday and to celebrate this occasion, Mira posted an adorable picture of birthday boy with a sweet note.

Mira took to her Instagram handle and posted a cute picture of the little munchkin. In the photo, Zain can be seen posing with snow-capped mountains in the background and wore a jacket with a sweater and a white shirt with blue pants. She wrote, "Gentle eyes with a naughty smile, warmest hugs and sweetest frowns, no one else makes my heart melt the way you do! Happy 4 my darling Zain! We love you [sic]"