[dropcap size=small]W[/dropcap]hether a suit is your daily uniform or your special-occasion staple, you know this: A well- fitting two-piece is nothing short of transformative. Few other garments match the suit’s ability to make its wearer look instantly pulled-together, a tad more confident and, possibly, in possession of a better physique than he actually has.

This modern-day miracle worker has come a long way since 19th-century British dandy and tastemaker Beau Brummell first eschewed the fussy fashion of his time, setting the trend for a look defined by dark coats, elegant shirts and full-length trousers, rather than breeches and stockings.

Over the past 200 years, the suit has undergone plenty of transformations, often taking on silhouettes and styles closely associated with specific cultural milieus. The ’70s disco era, for instance, will always be synonymous with the tight three-piece suits seen in movies like Saturday Night Fever. Wheelers and dealers of the ’80s, on the other hand, were identified by their Armani power suits – boxy affairs with broad padded shoulders and wide lapels.

Today, the well-dressed man has more options than ever: single-breasted or double- breasted, regular-fitting or skinny, structured or deconstructed. Whatever the choice, it’s the perfect fit that counts at the end of the day.

ANATOMY OF A SUIT
A checklist of details for two-piece perfection.

The Collar

The Collar
Turn sideways – can you see the back of your shirt collar when you’ve got the jacket on? You should, half an inch of it. The collars of both the jacket and the shirt should lie flat without puckering, and should lie close enough to each other without revealing a gap.

The Shirt Cuff

The Shirt Cuff
The gold standard is that half an inch of shirt cuff should be visible below the jacket cuff, while the sleeve of the jacket should fall half an inch below the wrist bone. On a related note, there are some sartorially adventurous men who distinguish themselves by strapping their watch over their shirtsleeve, a bold flourish we do not recommend.

The Waist

The Waist
A lightly tapered waist flatters most physiques, and helps to emphasise the V of the chest. A note about buttons: For two- and three-button jackets, the one at the bottom is never fastened. The top button on a three- button suit is sometimes fastened, but only if the lapels lie flat thereafter. Most importantly, there should be no creases around that one button that is always done up.

The Shoulders and The Chest

The Shoulders and The Chest
How do you know if your jacket fits properly? Check the shoulder. If there is overhang at the shoulder pad, it’s too big. If the outline of your shoulder shows in the sleeve, it’s too small. The sleeves of a well-fitting jacket should fall smoothly in a slightly curving line. Moving downwards, the lapels should lie flat on the chest. If there is more than a fistful of space between your chest and the front of the jacket, try a smaller size.

The Jacket Length

The Jacket Length
When it comes to the right length of a jacket, the popular saying is this: Like a good lawyer, a good suit jacket should cover your ass. But
no longer, or you risk visually truncating your legs. Another way to determine a good jacket length is to hold your arms in their natural position by your side – you should just be able to cup the hem of the jacket in your hands.

The Trouser Length

The Trouser Length
Unless you are wearing one of those deliberately shrunken suits popularised by designer Thom Browne several years ago, there is never a good reason for your trouser hems to hover above your ankles. Trousers should drape the shoes a little. And don’t forget to wear sufficiently high socks. As Johnny Manglani, founder of the Uomo Group, which operates luxury-menswear boutiques here and in Moscow, notes: “You don’t want to show off your hairy legs when you sit down.”

BEYOND THE BASICS
Four suits every man should be familiar with,

The Staple

The Staple
There are two workhorses in the world of tailoring: the navy suit and the grey suit. Lending themselves to just about every event from business to evening-cocktail, these garments are classics that designers continue to reinvent season after season. They are a wardrobe essential for Manglani, who notes: “Both convey seriousness, image and power.” His choice for warm weather: Super 150 wool, a high-quality, tightly woven wool that breathes well and doesn’t wrinkle easily.

THE PATTERNED SUIT

The Patterned Suit
Men cannot live by solid-colour suits alone – all right, they could, but that would be boring. From muted glen plaids and subtle pinstripes to large windowpane checks and whimsical polka dots, there are patterned options to suit all sartorial leanings. Shirts in white or light blue play well with most patterns. For mixing, it’s all about balance: If you’re wearing a strong pattern, like this Gucci tweed houndstooth, a plain shirt will prevent you from looking like an explosion in a fabric factory.

THE DOUBLE-BREASTED

The Double-breasted Suit
In fashion, never say never. The double-breasted suit appeared from the 1930s to the 1950s, then 1980s – and is back again. The difference is that the DB now comes in a slimmer, more-flattering cut. But skip it if visual streamlining is your goal: It adds heft to the wearer, making it ideal for slight physiques. This style is generally more striking than its single-breasted brothers but also tends to be warmer. Perfect for those whose office air- conditioning is kept at arctic levels.

THE TUXEDO

The Tuxedo
The only acceptable choice for black-tie events, the tuxedo is generally not amenable to experimentation. The most daring take on the tux that we would endorse is for the colour to be midnight blue, instead of black. A few other style rules that govern the tux: The jacket should only have peaked lapels – wear one with notched lapels and you may get people asking you for hor d’oeuvres. A tux should always be accompanied by a bow tie and a cummerbund, as well as formal black leather shoes.

Perfectly Suited

PERFECTLY SUITED
A bespoke suit fits like no other. This step-by-step process at Italian brand Brioni illlustrates why.

STEP 1
Before any measurements are taken, a master tailor speaks to the client to understand his requirements, and observes the latter’s posture and the way
he moves. Measurements are then taken, with the client fitted in a trial garment. After he chooses his fabric and details such as buttons, linings and monograms, the measurements are sent to Penne, Italy.

STEP 2
The master tailor makes a pattern that is unique to the client – no two patterns are the same. The pattern is then carefully placed, ensuring that the fabric for the different parts of the suit – such as the chest piece, back panels, sleeves and collar – lines up perfectly. The fabric is cut by hand to follow the contour of the body. Foundation thus set, the components of the jacket – including the canvas, shoulder padding and felt collar lining – are then assembled.

STEP 3
From the attachment of a felt lining for support in the collar, to the finishing of every buttonhole, every step of the process is done by hand. A canvas, usually made from a mix of linen and horsehair at Brioni, is sewn into the jacket – giving it shape and integrity. At every stage of production, the jacket is pressed to ensure precise workmanship.

STEP 4
The suit may be completed – but the process isn’t. A second fitting is conducted. The tailor looks at how the garment fits, and notes the necessary adjustments. The suit is altered by the brand’s expert tailors before the final product is delivered.

THE LITTLE THINGS
And, finally, the details.

Louis Vuitton tie copy

Neckwear
Ties and bow ties smarten up a suit instantly. Ensure that neckties stop at the beltline. For bow ties, shun pre-tied or clip-on versions. Tie, Louis Vuitton.

Turnbull & Asser pocket square

Pocket Square
A pocket square should complement your shirt and tie – not perfectly match them. Wear with stylish nonchalance. Turnbull & Asser pocket square, mrporter.com

Glashutte watch

Classic Watch
Don’t let down a great suit with a shoddy watch. A quality timepiece in a classic style signifies discernment – and keeps you on time. Watch, Glashutte Original.

Canali cufflinks

Cufflinks
Best worn beneath a suit, a French cuffed shirt adds formality and lets you accessorise with elegant cufflinks. Cufflinks, Canali.

Santoni

Shoes
Brogues lend themselves stylishly to a variety of occasions. A dark-brown pair, like this one by Santoni, goes with almost everything. Shoes, Santoni.