Get ready, Charlie Hunnam [1] fans, because he and Robert Pattinson [2] will make you swoon in the brand-new trailer for The Lost City of Z [3]. Sporting some serious facial hair, the pair star in the upcoming movie based on David Grann's 2009 bestseller of the same name. In it, Charlie plays Percy Fawcett, a British explorer who (true story) disappeared in the 1920s when he made his way into the Amazon jungle hoping to find civilization. Sienna Miller [4] also stars in the film, which includes Brad Pitt [5] among the producers. Watch the latest trailer above (and the original trailer below), then get more details on The Lost City of Z [6] and check out photos from the set [7]. The movie will be out in April!