once double breasted frock coats were established, lapels were sharply creased and their form was more static, varying only in details such as height, since they were buttoned nearly to the neck by the edwardians, then lengthened to the classic three-button shape, the two-button jacket being a further american innovation. the other significant change over that period was the use of the revers in the construction of the lapel, as the victorians used elaborate three-part patterns to cut a fold of cloth from the lining into the front of the lapel, a universal consideration of frock coats and dress coats of the period, but abandoned in favor of the current single-piece lapels at the same time as the switch to morning coats and lounge suits. modern lapels are largely identical in form to their 1930s counterparts.