Actress Sonakshi Sinha says that she is going to do a special song in "Yamla Pagla Deewana Fir Se". Dharmendra, Sunny Deol and Bobby Deol starrer hit franchise "Yamla Pagla Deewana" is entering into its third film with Sonakshi appearing in a special song titled "Yamla Pagla Deewana Phir Se