Mumbai, Dec 12 (IANS): Aamir Khan says he's "on top of the world" as his family's feedback on his forthcoming film "PK" is that it's his "best" ever. In fact, his youngest son Azad also refers to him as PK and copies his dancing too!

The 49-year-old, who is anxiously awaiting the film's release Dec 19, took to Twitter to share his excitement.

“7 days to go, guys! I have good news, my family saw the film and loved it. My little son Azad, my daughter Ira, Kiran & Ammi. #PKAana.

“All of them said it's my best film till date & I am totally thrilled!! Azad's started calling me PK, copies my bizarre dancing. #PKAana," Aamir tweeted Friday.

Azad is Aamir's son with his second wife Kiran, and they had him via surrogacy.

Aamir's eldest son Junaid, whom he had with first wife Reena, was missing from the screening of the film.

“The only person missing was Junaid who is currently in L.A and will watch it on the 19th. I feel on top of the world today,” added the actor-filmmaker.

Directed by Rajkumar Hirani and produced by Vidhu Vinod Chopra, the movie also stars Anushka Sharma and Sushant Singh Rajput.