Going by the conviction with which she had essayed roles in the past, Rani Mukherjee is expected to win fans' applause as Mumbai's fiercest and finest female cops in 'Mardaani'. The actress, who will be seen performing 'Krav Maga', a form of martial arts to compliment her role of a tough cop in the film, had recently urged girl students to take up martial arts training for their safety. "There is a need for women power to come forward in all the fields.... Girl students, who are symbolic of shakti, should be given martial arts training besides their regular studies so that they can protect their pride and honour", Rani had said at an event recently. In the video 'Mardaani - Krav Maga - Self Defence - Technique #3', released by YRF, Rani explains basic self defense moves.