The South Indian heroines are all donning action oriented roles as a part of their new commercial formula. While Sneha and Namitha are donning roles of police women in Telugu films Bhavani IPS and Deshadrohi respectively, multilingual actor Asin has been cast as a martial arts exponent in a Tamil-English bilingual 19 Steps."I'm a crazy fan of Vijayashanti (who gained popularity as a tough cop in 'Karthavyam'). If I succeed in doing 10 per cent of what she did, I have my career made. To make my role work, I have shed nine kilograms and hope to shed three more before the film goes on floors," Namitha told IANS.