See pleat. A double pleat, where two equal folds of fabric are pleated towards each other and meet in the centre–from the front you see two folds with the pleat behind. Inverted pleats are common in furnishings for decoration or easement, as chair valance corners, bed valances, pelmets, lampshades, cushion edges, curtain headings.…Pleats can be an extension of the main fabric, or specifically stitched so that they show a contrast colour or pattern peeking out.