Superstar Aamir Khan's daughter, Ira Khan, has revealed that she has clinical depression.

On World Mental Health Day, Ira Khan shared a video on Instagram.

The theatre director said it's time to "start a conversation" around mental wellbeing.

"I am depressed. I have been for more than four years now. I have been to a doctor and I am clinically depressed. I am doing much better now,” she said.

"For over a year now, I wanted to do something for mental health, but I wasn't sure what to do," the 23-year-old said in the video.

Ira Khan, who made her directorial debut with a play last year, said she has decided to chronicle her journey with the hope that it will help people in knowing themselves "slightly better" and "understand mental illness better".

"Let's start from where I started. What do I have to be depressed about? Who am I to be depressed? I have everything, right?" she said in the one minute-long clip.

Ira Khan said a lot has been going on in people's lives as they navigate situations and feelings which are "confusing and stressful".