Mona Singh (Jassi), who is set to make her big screen debut with Aamir Khan-starrer Three Idiots, says she is excited but also nervous about working with the superstar.

“Aamir is so good. It’s not even funny. He makes me so nervous. In fact, the thought of working with any of the big stars like Amitabh Bachchan, Aamir and Shah Rukh Khan makes me very nervous. But for now, I am excited,” Mona said.

In Three Idiots, which is based on Chetan Bhagat’s best-selling novel Five Point Someone and is being directed by Rajkumar Hirani, Mona plays Kareena Kapoor’s sister.

“I play a very bubbly character in the film and my look is very different from what I look right now. My role is really good and I have a major part in the climax of the film,” said Mona.