Semi- formal apparel is tricky, especially in the summer. Wear too-little clothing, or an entire tuxedo ensemble, and you could wind up in an embarrassing situation. The key is to look dressed up, while still keeping in mind the temperatures. For this look, we love a crisp chino pant or dress pant with a freshly-ironed button down shirt. For accessories, a nice watch will add a higher-end look to the outfit, while a pair of Box Socks in a deep burgundy lends a classic-yet-romantic ambience. If your proposal is taking place in the fall or winter, simply trade short sleeves for long sleeves and consider adding a sweater-coat.