For the record guys - I cited Cary Grant, Fred Astaire,& other greats as examples of guys who have valid opinions about style. Nothing to do with white shirts.. Here's a white shirt with linen- I like this kind of look. Today
You mean re: the navy pants? As long as it looks like a Summery fit, as opposed to biz-cas in worsted or flannel that says 'Suit' . Something with a wider hem and lower waist, say, in linen or light cotton.