A special trailer preview of the upcoming social drama 'Thappad' was organised in Mumbai on January 30. Lead actress Taapsee Pannu came to attend the trailer preview. She looked gorgeous in check dress. Director Anubhav Sinha also marked his presence. The director-actor duo previously collaborated on 'Mulk'. Chairman and Managing Director of T-series Bhushan Kumar was also present at the trailer preview event. Official trailer of 'Thappad' will release on January 31. The movie will hit theatres on February 28.