>>455 Compare his outfit in the first Thor to the second film. In the first, behind the scenes photos show a prominent bulge, which was flattened post-production via CGI for the final edit. In the second, his outfit was redesigned to hide his groin; this was confirmed by one of the wardrobe designers.

First- http://rebloggy.com/post/tom-hiddleston-chris-hemsworth-thor-loki-mischief-edits-behind-the-scene-odinbro/28554819341

Second - https://s-media-cache-ak0.pinimg.com/originals/f2/73/22/f27322048540eef2aef476c0959a24bb.gif

This third movie, the outfit seems redesigned again, no flap. Giving the fans what they want, I suppose.