Summer suit choices, and the pros and cons of cotton ties: Dandy & Dapper debate

You've missed the point, Dapper. Cotton ties are hot. Isaia has an open-weave cotton tie in a grey floral pattern (HK$2,100). Armani Collezioni and Hardy Amies have got them in stripes, modern patterns, or plain cotton, too (HK$1,300 to HK$1,800; Lane Crawford). J.Crew did tons of great, different patterned ones, which are on sale right now (HK$180 and up).
Ooh, good thinking, Batman. Look for semi-lined or unlined jackets for comfort, but also because less structure will look less stiff. COS is a good place to start for smart Scandinavian simplicity. Its lightweight cotton two-button blazer (HK$1,250) and tapered chinos (HK$690) in a stone beige cotton poplin are the perfect solution. Scotch & Soda also does slim-cut chinos (HK$1,400) and casual jackets (HK$4,000) in various beiges. Treat yourself to Salvatore Ferragamo's medium beige double-breasted summer suit (HK$18,900). Or check out the linen or cotton seasonal suits at Hermès, pure luxury in various tones (HK$26,900 to HK$28,500). Which brings me to the next consideration: colour. Pick one. It could be anything from light beige to dark khaki. Get the right suit and you'll be able to take it from weekend to wedding to work with just a change of shirt and accessories. On weekends, I like to wear mine with a tee and cool trainers.