A New York guy named Adam Gallagher was suddenly dubbed a "straight man's fashion icon" by GQ US magazine because his style is: first, not effeminate; second, not outlandish; and third, not overly trendy. Therefore, he's been praised as a non-freakish, straight man's style icon.

His everyday outfit consists of a solid-color shirt and rolled-up casual trousers, with a striped tie as the finishing touch:

Or a white shirt paired with a well-tailored suit:

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H&M's ubiquitous dark red plaid shirts, to look comfortable, should be paired with a dark blue sweater. Choose earth-toned shoes and a matching bag, and you can't go wrong.

A basic dark gray suit with a light blue shirt—never pair it with off-white leather shoes...it'll ruin the whole look.

In spring and autumn, pairing a shirt with a shawl collar cardigan is a foolproof combination. Remember this rule: if the shirt is patterned, the cardigan should be plain; if the shirt is plain, the cardigan can be patterned. Both can be plain, but never both patterned.

With this combination, you can add a solid-colored coat for colder weather, and you're all set.

Red and blue is always a safe bet. Whether it's formal or casual, red on top and blue on the bottom, or vice versa, they are the most harmonious and good combination.

For a man who wants to be lazy yet stylish, a leather jacket is an absolute must-have. Short, short, short—I'll say it three times:

A deliberately distressed Cambridge Satchel can also be very versatile and a great addition to any outfit:

You can never have too many blue or red plaid shirts, because they can be paired with almost any solid-colored casual pants:

A pair of white shoes is all you need; they go with everything from coats to leather jackets.

Can you spot another rule from these two pictures? It's that coats don't necessarily have to be formal; you can wear them draped over your shoulders.

He's only 23 years old, from New York, and currently lives in Chicago. He's a street style blogger. He started uploading his outfits to Lookbook when he was 17, and a year later he launched his own website, IAMGALA, to share street style, travel, and lifestyle.

That said, with a height of 180cm, a handsome face, and an inherently warm, global boyfriend vibe, he'd probably look good even in a rag.