A change in season usually brings with it an element of unease and uncertainty. By now you're comfortable with the clothes that you wear to work — that trusty navy blazer, those black Derbies and your reliable overcoat. And to make the transition from cold to hot just a little more bearable, here are some tips to nail your “business-casual” look this summer: • Go for tailored pieces, the right suit should be comfortable, but tailored. “Business-casual” doesn't really call for a full-on suit, invest in a few separates, navy blazer and some mid-grey trousers. • Alternatively, ignore the advice above and invest in a cotton/linen suit in brown or beige to wear together or as separates. • As for shirts, it's important to make sure you not only nail the fit, but also the tone. You want to have a bit of fun with what you wear; chalky colours (pastels) are big right now, in everything from pink and blue to yellow and lilac. Pair them with a pattern textured neutral tie and jacket. • You could also go in the opposite direction and pick up a pattern shirt. Plaids were all over this season's runways in lightweight materials, such as cotton and madras. They are a perfect way to add a punch to your work wardrobe, but just remember to anchor them with a solid neutral tie. • Beige chinos are a must. Jeans are not off limits either, just make sure they're not too heavy and are as dark an indigo as possible. It'll help if they have a similar fit to your tailored pieces. • If you're going to buy any new shoe for this upcoming season, make it suede. The other shoe you need is a penny loafer. They are really big this summer and, with a much higher vamp and a more streamlined silhouette, they are perfect for the office as well as a night out. Remember, adding your usual black Derbies and chocolate brogues into your rotation will breathe new life into your business look. • As for the details, linen and cotton ties in solid neutrals and bold patterns are as good as each other. Swap your leather watchstrap for a canvas one, and do the same to your work bag. • Regarding socks, if you do need to wear them, invest in thin gauges and make sure they are made out of cotton to avoid any hardcore sweating situations.