so much depends upon the fabrics, some wrinkle more than others and there isn't much you can do about that. i pack in layers, criss-crossing each layer, that works well for me. Suits, gowns, dressy outfits and shoes go in the garment bag. Hang items up as soon as you get your luggage. Steam wrinkles out in the shower. If the wrinkles are really bad, use the ships laundry room that has an iron.