"Dear lord, the veins are bigger than mine."
So, yeah, despite it being a figurative and literal stretch, they gave the man pants. But, as a result, the transformation from slacks to stitch-busting short-shorts leaves human-Bruce inevitably naked when the dust clears.
None of this is new information, but it's rather easy to forget when the majority of Hulk battles abruptly cut away after victory is declared. Even when they are fighting in, say, a snowy forest ...