Vidya Balan looked conscious as her dad visited her on the sets of 'The Dirty Picture'All this while Vidya Balan was comfortable indulging in a skin and smooch fest for her next project. On Saturday, however, the actress appeared conscious and fumbled while going beyond the accepted boundaries for her role in The Dirty Picture.Her father P R Balan happened to drop in at Mehboob Studios in Bandra where she was filming for Milan Luthria's flick. Vidya Balan with her father P K BalanHer dad and her mother Saraswati stay away from media glare and it was a rare occasion to have him around on the sets.Says a studio source, Vidya was nervous when her father was watching from behind the camera. Apart from the oomph factor, Vids also had to keep on smoking for the scene. This doubled her dilemma.As she had been hospitalised recently, due to stress and exhaustion, her dad also expressed concern about her puffing away.Adds the source, When he realised that she was inhibited seeing him on the sets, he went and spent time reading in her vanity van. Apparently, her father was keen to see her at work for the film especially after her illness.Balan Sr has always been a doting dad to his star daughter. Earlier after seeing her performance in Paa, he had gifted her a luxury car, on which Vids had set her sights on. She was taken by surprise to see the vehicle at her doorstep. And what had touched her more was the card that accompanied it: 'From Paa for Paa!'