For the clothes I pack, I usually hang them up as soon as I get to the hotel. My Briggs & Riley suit sleeve keeps it pretty well under control. If that is not sufficient (and it usually is), then I do the shower steam thing. The last resort is the hotel iron -- why are they put away with water in them ALWAYS? Gross. As for clothing worn on the plane, I am all about comfort and "athleisure" pieces. I swear by the athleisure wear at UnderJeans-- they also make great men's underwear and swimwear. The high-tech fabrics of their athletic wear wick away moisture and are very stretchy and wildly comfortable. But they maintain a sleek silhouette. Oh, and they never wrinkle, so I get off the plane feeling and looking great (albeit casual).