Indian Bollywood film actors Ritesh Deshmukh, Priety Zinta, Amitabh Bachchan, Aishwarya Rai Bachchan and Abhishek Bachchan pose with a Solar Lanterns as they pledge their support to the 'Light a Billion Lives' campaign, an initiative of the Energy Resource Institute of India (TERI) headed by Nobel Laureate, R.K.Pachauri during a press conference to announce the 'Unforgettable' world tour, in Mumbai on July 11, 2008. The Unforgettable Tour will bring the Bachchan family - Bollywood legend Amitabh, his son Abhishekh and daughter-in-law Aishwarya Rai - together for the first time on a world tour. Other Bollywood stars like Madhuri Dixit, Shilpa Shetty, Akshay Kumar, Priety Zinta and Ritesh Deshmukh will join the Bachchan family on tour. The tour covering 18 countries in six continet starts July 18, 2008.