Bollywood sensation Isha Koppikar will play the role of a mafia don's mistress and a don herself in two upcoming movies about the underworld.

Koppikar plays the mistress of a crime boss in Farhan Akhtar's Don, which is to be released in October and stars superstar Shah Rukh Khan.

After Don, Koppikar plans to do an about turn and will play the role of a don in the movie Shabri, based on the life of a female underworld boss, a national daily reported.

The movie is under production and no release date has been set as yet.

"Don is a big bet in hi-fi glamorous look, while Shabri gave me a chance to prove myself," the daily quoted Koppikar as saying.

Koppikar had to put on weight for her role in Shabri, "but while emulating the sufferings she had gone through, I lost my appetite," she reportedly said.