Neutrals are always a stylish choice, but if you’re after something with a bit more character, try a stripe or a monochrome colour scheme to keep things feeling smart but fun. 

If you only take one rule away from this, make it the following: untucked is always best. More relaxed and definitely more stylish, there are no exceptions. 

A boxy shape will keep the look fresh - a relaxed silhouette is much more on-trend.

If you’re styling your short-sleeved shirt with a swim short or straight legged trouser, stick to your true size. For a slimmer fit bottom, sizing up will balance out the proportions.

Wearing a short-sleeve shirt unbuttoned with a white tee underneath is very Tom Hardy. More casual, it can also break up louder prints or colour.