Probably the biggest mistake people make is being over-dressed. As weddings usually take place during daytime then the proper dress, if kilted, is with a tweed jacket, white shirt and tie (plain to match the kilt - not tartan) self coloured hose and brogues (black or brown). This is also a perfectly acceptable dress for an evening wedding unless it is known to be a more formal event. Prince Charlies are not appropriate and should never be worn at a daytime wedding. An Argyle jacket may be worn but only if nothing more suitable is available. Strangely enough, one of the doublets with lace jabot, tartan hose and buckle brogues is suitable wear for a daytime wedding but the extra accoutrements such as fly plaids, dirks etc. should be left to the wedding party.