Actor and comedian Sunil Grover on Thursday penned down a heartfelt note for brother Anil Grover in his film `Dunki` co-starring Shah Rukh Khan, released today.

Taking to Instagram, Sunil shared a poster of `Dunki` which he captioned, "`Dunki` day today. Every SRK sir`s movie has been special to me. And this one is made by my favourite director Mr. Raj Kumar Hirani. It can`t get bigger. And this one has one more AND, and that is, my younger brother Anil Grover is part of this film. Look at the poster you will know ;). Mere Rabba!! It can`t be more special."