Finally yet another lead cast has joined the usually solo Aamir Khan in the latest and fourth poster of PK`. Rajkumar Hirani and team have done it again to maintain the surprise element with the film`s posters.

Introducing his co-star Sanjay Dutt and his screen character, Aamir posted the poster as well as tweeted thus, "Humra phiren... Ouka naam hai Bhairao, lekin hum ouka bulawat hai Bhaaya..." Sanjay Dutt is also seen wearing the same Rajasthani attire like Aamir's and carrying Sousaphone.

While the director, Rajkumar Hirani wrote, "Sanju and Aamir my two favourites."

Soon, one can expect the other actors from the film - Anushka Sharma and Sushant Singh Rajput - on the posters...

PK` is slated to release on 19th December 2014.

Watch 'PK' Trailer