I think brown and white is an underrated anchor for a sunny day. While I like bright colors and bold patterns as much as the next guy (ed. note: actually more), I think that the patina of the wholecut shoes is really what makes this outfit.
Though I did go to a “brown and white” party once, it was pretty beige-y.
EDIT: Almost forgot, I don’t really follow “trends” or whatever, but if mirrored shades come back, I want some credit for being ahead of the curve.
Jacket - Vtg. Southwick
Shirt - Vtg. Hathaway
Pocket Square - 100% Silk Made in Italy (no other tags)
Tie - JCrew
Shoes - Vtg. Howard & Foster