How to Choose a Blazer for Your Body Type, With Men’s Frames From Trapezoid to Diamond

A trapezoid outline, with shoulders a little wider than the hips and a gentle taper between them, often suits a tailored cut that follows that taper with clean lines.

Moderate waist shaping keeps the blazer close to the body without exaggerating the taper; peak lapels, which point up towards the shoulders, are one option if you like more emphasis at the top.

Ralph Lauren Purple Label’s single-breasted blazers in fine wool are one example of this approach, and Anderson & Sheppard’s peak lapels are another to compare.

A rectangle outline, with little visible taper through the shoulders, torso and hips, can wear a straight-cut blazer as it is, or add some shape through the tailoring if you prefer.

If you want more shape, look for light shoulder structure and gentle waist shaping, which give the torso a clearer outline.

A double-breasted front adds an extra layer of cloth across the chest and points the lapels outwards, which many men like for more presence.

Brunello Cucinelli and Loro Piana make examples in textured cloth that adds interest to the surface.

An inverted triangle outline, with shoulders and upper torso noticeably broader than the hips, is easiest to fit first at the chest and shoulder, then at the waist, which often needs taking in.

If you would rather soften the contrast between shoulders and hips, choose a blazer with natural, lightly padded shoulders and clean lines that skim rather than cling to your broader upper body.

If you like the contrast, a more fitted waist shows it.

Kiton’s soft, natural shoulder construction and Zegna’s silk-wool blends are examples worth comparing for this build.

In this guide, we use Oval for a rounded fuller-middle outline, with fullness spread fairly generally through the torso.

Start by fitting the blazer to fasten comfortably over the fullest point of the abdomen without pulling, then check the shoulder.

A single-breasted blazer with a slightly lower button point gives a longer, deeper opening at the front, which some men with a fuller middle like; some shoulder structure keeps the top of the jacket defined.

Huntsman’s house cut, a single-button jacket with structured shoulders and a slightly longer skirt, is one example to compare; its button sits at the waist, so try it against a lower-buttoning jacket and check where each falls on you.

A navy worsted is a versatile cloth for it.

A triangle outline, where the lower torso and hips look broader than the shoulders, is best fitted at the hips first: the blazer should hang over the seat without pulling at the lower button or the vents.

If you want a more even outline, defined shoulders and a clean drape through the torso add presence above the waist.

A roped shoulder, where the sleeve head sits slightly raised above the shoulder line, is one way to add that definition; padded, structured shoulders are another.

Peak lapels pointing towards the shoulders can add to the effect.

Gieves & Hawkes is known for a structured shoulder line, and a firm cloth such as a twill helps the shoulder hold its shape.

An hourglass outline has broadly balanced shoulders and hips with a visibly more defined waist between them.

A blazer can follow that waist or play it down; both are valid.

A moderately fitted waist with clean lines through the torso, neither loose nor tight, is a good middle ground.

Soft-shouldered construction with little padding follows your own shoulder line, which keeps the shoulders in line with the hips if that is the look you want.

Peak lapels add some emphasis at the chest if you like it; notch lapels, as in the photograph, are the quieter option.

Saint Laurent and Tom Ford both make single-breasted blazers with a clearly shaped waist, examples to compare.