If you're off to a beach or pool party in the Hamptons this weekend (who isn’t?) then YouTube superstar Jim Chapman has built you the perfect outfit.

Drawing heavily from the stylebooks of very cool Manhattan literary agents and no-nonsense Hollywood talent reps, Chapman has aced an extremely doable smart/casual look that would be perfect for a summer birthday/work/anything-but-a-really-smart-wedding party.

The dark blue checked shirt is comfortable and cool – in temperature and aesthetic – and Chapman has styled it right with the sleeves rolled up to, but not beyond, the elbow, and not too many buttons undone.

His flat-front chinos are a neat shade of off-white, and the hook and bar waist fastening means that he can, and should, forgo a belt with this one (but if you do fancy a little extra security around the middle, try a woven fabric number). Meanwhile, the slight crease and tight turn-ups make for a clean silhouette.

Chapman finishes the whole thing off with a pair of box-fresh white Converse Jack Purcell sneaks, which you can easily substitute for a pair of Converse All Stars or even some Old Skool Vans. And don't forget your sunglasses.