Young Bollywood actress Isha Koppikar will go from mafia don's mistress to mafia don in her roles in two upcoming movies about the underworld, a news report said Tuesday. Koppikar plays the mistress of a crime boss in Farhan Akhtar's ``Don,'' which is to be released in October and stars one of India's top leading men, Shah Rukh Khan. She'll follow that role with a turn as a don in the movie ``Shabri,'' based on the life of a female underworld boss, the Hindustan Times reported. The movie is still shooting and no release date has been set. ``'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.