How Should a Cardigan Fit? A Guide to Shoulders, Buttons and Length
A cardigan fits well when its shoulders sit as designed, its sleeves let you move, and its front closes without pulling. The right length depends on how you plan to wear it, but the hem should look intentional rather than landing wherever the knit happens to stop.
Start with the layer underneath
Try on a cardigan over the top you will actually wear beneath it. A fine knit over a slim tee needs less room than a chunky cardigan over a shirt. Button the cardigan, then sit down and reach forward. If you only assess it while standing still, you miss the moments when an awkward fit becomes obvious.
Where should the shoulders sit?
On a cardigan with a conventional shoulder seam, the seam should land close to the edge of your shoulder. A seam pulled inward can make the upper arm feel tight. A seam that falls far down the arm may create a deliberately relaxed shape, but it should look balanced on both sides. Dropped shoulders are a design choice, not automatically a sizing mistake.
Lift both arms and reach across your body. The cardigan should move with you without tugging sharply across your back or dragging its hem upward.
What should the buttons tell you?
Fasten the middle buttons and look at the front in natural light. The placket should lie reasonably flat. Small, soft folds are normal in knitwear, but a wide gap between buttons or horizontal strain across the chest suggests that the cardigan is too narrow for the way you want to wear it. If the fabric hangs in deep vertical folds around the waist, you may prefer a smaller size or a more shaped cut.
Do not size up automatically because a cardigan looks good open. If you expect to wear it closed, judge it closed. If you will wear it almost exclusively open, prioritize the shoulder, sleeve and side profile instead.
How long should a cardigan be?
Cropped cardigans
A cropped hem usually looks most deliberate when it meets the waistband or sits slightly above it. Check the length while seated. If the back rises much higher than you want, try a longer cut rather than simply a larger size.
Classic cardigans
A classic length often reaches around the top of the hip. It is easy to layer over a tee or shirt because the proportions remain clear. Look at where the hem falls relative to your trousers, skirt or dress, not just where it falls on your body.
Long cardigans
A longer style should hang cleanly down the sides without bunching around the hips. Walk a few steps and sit down to see whether the knit twists, catches or feels cumbersome. The best length is the one that gives the outfit shape while still allowing you to move comfortably.
Check the sleeves and the knit
For a full length sleeve, the cuff should usually reach the wrist without constantly sliding over the hand. Bend your elbows. A sleeve that rides far up the forearm may be too short, while excess fabric pooling at the wrist can make a neat cardigan feel untidy. If the garment has wide or intentionally long sleeves, judge whether that volume feels purposeful with your usual outerwear.
Fine knits often follow the body more closely. Substantial knits need a little more room to fall naturally. Neither should feel as though the fabric is working hard to hold its shape. Compare a cardigan you already enjoy wearing with the listed garment measurements when shopping online. Our guide to measuring clothes for a better fit online shows how to make that comparison.
A simple fitting room test
- Put on the layer you plan to wear beneath the cardigan.
- Check the shoulders and sleeves with your arms at rest.
- Fasten the buttons and look for pulling or gaping.
- Reach forward, sit down and walk a few steps.
- Look at the hem with the rest of your outfit, not in isolation.
If the cardigan passes those tests but still feels wrong, the issue may be its cut rather than its size. Try a different shape before moving up or down repeatedly.
Keep the fit you chose
Knitwear can change shape when it is stored carelessly. Fold a cardigan rather than leaving a heavy one on a hanger for long periods. For more practical care, read our guide to storing knitwear. For a different layering proportion, explore how to layer clothes without looking bulky.
Explore more thoughtful wardrobe advice in TELLS JOURNAL Guides.
What we choose to keep becomes part of who we are.
