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SILHOUETTE THE FIT JOURNAL FIT NOTES · 08

FIT GUIDE / THE ARCHITECTURE OF A BLAZER

Why some blazers define your shape, while others hide it

 

It looks just right on the hanger. On your body, your waist disappears and the shoulders seem broader than expected. Why does a blazer look so different once you put it on?
23 AUGUST 2026 7 MIN. READ
Photography: TU PRIMUM

Fit is about more than size

When a blazer does not sit right, it is easy to start blaming your body. But a blazer already has a shape before you put it on.

The cut determines where the fabric allows room and where it draws in. If it falls straight down from the chest, your waist can disappear, even in the right size.

If you want a blazer that defines your waist, that shape needs to be built into the cut.

The shoulders, front and fabric must support that shape. Here are four signs that the construction is working against the silhouette you want.

FIT PRINCIPLE Nº 01

A blazer is more than a jacket.

It is architecture for the body.

THE FOUR SIGNS

When construction works against your shape

If even one of these elements is out of balance, it can change the entire look of a blazer.

01

The blazer looks too boxy

Your upper body becomes one straight outline, with excess fabric gathering around the back or stomach.

WHY IT HAPPENS

The cut falls almost vertically from the chest instead of drawing in towards the waist.

02

Your waist disappears

Even a naturally defined figure can look more square once the blazer is on.

WHY IT HAPPENS

The pattern has no shaping at the waist, so the fabric falls straight down from the chest.

03

The shoulders look too broad

The blazer overwhelms your frame and makes your upper body look heavier than you intended.

WHY IT HAPPENS

The shoulder line is not balanced by enough shaping through the body.

04

The front starts to pull

Horizontal creases around the buttons, or tension across the chest and back, suggest the blazer is not draping smoothly.

WHY IT HAPPENS

The fit, size and fabric are not working together to create a clean drape.

Example of a straight-cut blazer with a hidden waist, broad shoulders and pulling at the front
WHEN THE CUT WORKS AGAINST YOUR BODY
  1. 01 Straight cut
  2. 02 Hidden waist
  3. 03 Broad shoulders
  4. 04 Pulling at the front

THE QUICK MIRROR CHECK

Five things to look for in the fitting room

If several of these points are not working, another size may not be the answer. The cut itself may not suit the silhouette you want.

  1. 01Does the fabric fall smoothly from the shoulders?
  2. 02Can you move your arms without excessive tension across the back?
  3. 03Is your waist visible without the blazer feeling tight?
  4. 04Do the buttons lie flat, without horizontal pulling creases?
  5. 05Does the blazer keep its shape when worn open?
Front view of The Prima blazer

A DANISH ANSWER TO THE FIT QUESTION

Where The Prima begins

The emerging Danish brand TU PRIMUM has chosen to focus on one of the wardrobe's most demanding classics: the double-breasted blazer.

The ambition was to combine a defined shoulder, a shaped waist and a feminine silhouette while retaining the authority of a power blazer.

The shoulder brings strength.
The waist brings femininity.

THE ANATOMY OF FIT

Four choices that shape the silhouette

No detail stands alone. The relationship between them determines how a blazer looks on the body.

The Prima's structured shoulder and wide lapel
Photography: TU PRIMUM
01

THE SHOULDERS

A defined frame that does not overwhelm

The Prima has structured shoulders that give the upper body a clean line. That shoulder meets a cut that draws in towards the waist. The contrast between the two creates balance.

Rear view of The Prima with its shaped waist
Photography: TU PRIMUM
02

THE WAIST

The shape is built into the cut

A defined waist should not depend on choosing a blazer that is too small or straining the buttons. The Prima's shape comes from its construction, so the silhouette remains visible even when it is worn open.

Close-up of The Prima's Italian wool, lapel and buttons
Photography: TU PRIMUM
03

THE FABRIC

Fabric that delivers what the cut promises

The outer fabric is 100% Italian virgin wool in the Napoli Doppio Ritorto weave from Fratelli Tallia di Delfino in Biella. Its double-twisted construction gives it the substance to hold its shape without making the blazer unnecessarily stiff.

Front view of a woman wearing The Prima, showing its double-breasted front, shaped waist and six buttons
Photography: TU PRIMUM
04

THE FRONT

Six buttons demand precision

A double-breasted blazer has more fabric across the front and can easily look broad. On The Prima, the button placement works with the waist, shoulders and length to create one coherent line.

MATERIAL DOSSIER

What a campaign photograph cannot show

OUTER FABRIC100% Italian virgin wool
WEAVENapoli Doppio Ritorto
FABRIC MILLFratelli Tallia di Delfino · Biella
LINING100% viscose
DESIGNDenmark
PRODUCTIONItaly

THE EVERYDAY DIFFERENCE

How does construction make a difference in wear?

On a small screen, two blazers can look almost identical. The differences become clearer in motion and after several hours of wear.

  • The shoulders hold a more defined line
  • The waist keeps its shape, even with the blazer open
  • The front drapes more smoothly around the buttons
  • The viscose lining glides over the clothes underneath
  • The wool has substance without feeling like a rigid shell
Woman seated in The Prima blazer

AN HONEST ASSESSMENT

Is The Prima the right blazer for everyone?

No. If you prefer very loose, soft and deliberately unstructured silhouettes, it is probably not the most natural choice.

It is made for the woman who wants:

  • A defined shoulder without exaggeration
  • A more defined waist
  • A classic double-breasted front
  • A feminine look with authority
  • A wardrobe piece designed to be worn again and again


THE CONCLUSION

A blazer should not make you wish for a different body

It should help you see your own more clearly. That is why two blazers in the same size can create two completely different silhouettes.

ONE falls straight down and conceals the waist. THE OTHER draws in at the waist to create balance.

The Prima is TU PRIMUM's take on the latter. Its shape comes from treating fit as the most important part of the design, without making the blazer tighter or more conspicuous.

SILHOUETTE THE FIT JOURNAL

This is paid partner content created in collaboration with TU PRIMUM. Product information and fabric specifications were supplied by the brand. Photography: TU PRIMUM.

© 2026 SILHOUETTE · THE FIT JOURNAL

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