One of my favorite ways to add non-fussy luxury to any room is by using furnishings and window treatments with inverted pleating like this panel from Restoration Hardware.
Inverted pleated skirts provide for a clean tailored look pictured here from The Nest Egg in Fairfax.
Dressing up an inverted pleat with trim is more fun than fussy!
This sofa was recovered in mohair by Knops Upholstery in Albany, California. Its solid back, single down-filled cushion, and inverted pleat skirt combine to create a sophisticated sofa.