One of my doublets is based on a "regulation" doublet, but is cut a bit higher in the front. In my opinion, this doublet is perfect. I am considering having a Sheriffmuir doublet made in the future, to have another option to wear in the evening, but my doublet shown here can be worn with/without a waiscoat; with a black bow tie or white; or with a jabot. Waistcoat styles can vary, too.