"You make me a proud brother Harshvardhan! Your talent is for all to see... Now keep your head down and work even more hard just like Anil Kapoor," Arjun tweeted on Wednesday.

Harshvardhan is the son of veteran actor Anil Kapoor, while Arjun is the son of Anil's elder brother Boney.

Commenting on 'Mirzya', directed by Rakeysh Omprakash Mehra, Arjun said: "Poetry in motion. Rakeysh Omprakash Mehra, the artist and Harshvardhan, Saiyami Kher his paintbrush, and Mirza Sahibaan's story his canvas... Beautiful."

The 'Gunday' star also praised debutante Saiyami Kher, who is starring along with Harshvardhan.

"Congratulations Saiyami Kher, you are beautiful and your eyes as blue as the sky... I hope you continue to shine just like you did in 'Mirzya'," he wrote.

The film is slated for release this Friday.