Anju Mahendroo (in picture), the colourful actress who once boasted of an off-field partnership with cricket legend Gary Sobers, is to play the role of the gossip columnist Devyani Chaubal in The Dirty Picture, based on southern sleaze queen Silk Smitha‘s life. Devyani Chaubal wrote the saucy Frankly Speaking column in the now-defunct film magazine…