Actress Madhuri Dixit has revealed that the first time she ever got starstruck on set was when she met veteran actor Amitabh Bachchan. The actress added that she got a little tongue-tied when she met him. Madhuri made a special appearance in the song 'Makhna' in 1998 film 'Bade Miyan Chote Miyan' which also stars Govinda and Raveena Tandon.