Bollywood actress Vidya Balan says the audience will see her in a "bolder avatar" in the upcoming movie "Dirty Picture".

"It doesn't get bolder than this," said Vidya.

The movie is based on the life of Silk Smitha, one of the most popular sex sirens of the mid eighties in the South Indian film industry. She was known for her bold roles and skimpy outfits.

The shooting of the film is set to start soon.

Riding high on the success of her last film "No One Killed Jessica", Vidya feels playing Silk Smitha on screen is very interesting as there are no similarities between the two women.

"I have to work hard to portray the character of Silk Smitha because there is no similarity between us. It is really interesting that you play a character, which is totally different from you. I am very excited," Vidya told reporters Wednesday on the sidelines of the launch of a book penned by film producer Pritish Nandy.

"Dirty Picture" will also have Nasseeruddin Shah sharing screen space opposite Vidya. The two had been paired opposite each other in "Ishqiya".