VIDEO : Chris Pratt Says 'Avengers: Infinity War' Will Be Biggest Movie Ever

Guardians of the Galaxy and Avengers: Infinity War star Chris Pratt says the upcoming Marvel blockbuster will be the "biggest movie of all time."Pratt took to his Instagram page to share his Empire Magazine cover that hails Infinity War as "a blockbuster event a decade and 18 films in the making."Empire is right! So grateful ...