It's not just the suit that counts, it's how you wear it.
"A nice shirt, tie, and pocket square can change the look," tailor Will Davison says.
However, a nice suit can be ruined by matching accessories.
Sometimes, it's not enough just to own a nice suit — it's how you wear it that counts.
Luckily, this doesn't have to mean spending a fortune at a tailor, and accessorising well can help upgrade a look effortlessly.
According to tailor Will Davison, "A nice shirt, tie, and pocket square can change the look."
"Lots of people get hung up on having a matching tie and a matching pocket square, but we don't personally like it," Davison says.
Instead, he suggests: "Pick out a colour from the tie or the suit and have that in the pocket square so they're similar tones to each other but not completely matching."
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The City of London tailors aren't the only ones to have a distaste for matching accessories.
"One of the big pocket square no-nos for me is when they directly match the tie, like they came together in a set," Dan Rookwood, US Editor at Mr Porter, told FashionBeans.
"A pocket square should be used to add some interest in terms of colour and/or pattern," he added.
Pocket square makers Rampley & Co agree.
"If your pocket square has a pattern or print, for example, then pick a colour from that palette to bring your look together and match it to a primary colour in your ties," they say on their website.
In short, your pocket square should complement your look — not match or clash with it.