Mumbai, Oct 9 (IANS): Actor-producer Aamir Khan helped to wrap up the post-production of his forthcoming film "Secret Superstar", says its director Advait Chandan.

Aamir took time off from the shooting of "Thugs of Hindostan" for "Secret Superstar".

"It's my first film and obviously, I've been really nervous and anxious. But thankfully Aamir sir took time off from 'Thugs...' to help me wrap the post-production of the film," Chandan said in a statement.

"He came and gave his approval to the VFX and DI (colour correction) in the film. He spent the last few nights fine-tuning the final sound mix. He insisted on watching the first copy before he left to promote the film and once I had his final approval on the complete product, I've been sleeping peacefully."

"Secret Superstar" is based on a teenage girl named Insia, played by Zaira Wasim, who sets out to follow her dream of being a singing superstar under the confinement of anonymity.

Produced by Aamir Khan, Kiran Rao under the banner name of Aamir Khan Productions, Zee Studios, and Akash Chawla, "Secret Superstar" is slated to release on October 19.