In order to get sleeves long enough, they may come to your fingertips when your arm is straight. A collarless suit coat that has ample room and long enough sleeves will present a less cluttered and cleaner line. This is also practical because of the many ways you can change the look with accessories like pins or scarves. The metal of the pin and earrings should match the color of hardware on the harness. Make sure no lace, ruffles or scarves wave in the wind as that draws attention to any posture faults.
Gentlemen look good with tie and handkerchief in place.
Cufflinks are making a comeback for both sexes. Women are not supposed to wear boots. It is correct to wear a dress show, but safety is still a prime concern, so choose your shoe so that you can get into and out of the vehicle safely. Wearing the same color shoes, hose and skirt or pants also makes for an uninterrupted line. We sometimes have a lift of dress code in our area due to the furnace that we call spring, summer and fall.