Layering for Changing Seasons in Plus Sizes

Layering is usually described as a question of warmth, but the fit is what decides whether it works. Every layer you add puts fabric between your body and the next garment out, and that added circumference has to go somewhere. Two thin layers can behave entirely differently from one thick one, and a jacket that fits over a shirt will not necessarily fit over that same shirt plus a knit.

The practical approach is to think in a fixed order, from the body outward, and to decide the thickness of each layer before the next one is chosen. Doing that turns a wardrobe of separate garments into a system, and makes it far easier to decide what to keep when the season turns.

The width you add is not spread evenly

A layer does not add the same amount of room all the way round. It adds locally, where the body and the layer’s own construction put bulk, and those places are predictable.

The armhole is the first place to run out of room. Once the upper arm and the shoulder are inside two layers, a close armhole becomes a tight one, and the sleeve starts to pull. The shoulder line is next: an extra layer under a jacket lifts the shoulder seam and pushes the sleeve head out of position, which is why a jacket can suddenly look short in the sleeve when a knit is worn beneath.

The centre front is the third place. Buttons and zips close a fixed distance, and adding a layer under a closed front means that distance has to cover more. A jacket that closes comfortably over a shirt may not close at all over a heavy knit, and forcing it distorts the button stance.

Knowing these three points tells you what to check before buying a layer, and it explains why sizing up is rarely the whole answer.

Choosing the inner layer by thickness

The layer nearest the body should be the thinnest and the smoothest, because everything else sits on it. A fine knit, a light thermal, a smooth cotton shirt or a silk or synthetic liner all do this well, since they add warmth and very little circumference.

What to avoid in the base position is anything bulky or textured: a chunky rib knit, a fleece, a heavy flannel shirt. These add bulk exactly where it is hardest to accommodate, at the arm, and they add friction, which stops the outer layer sliding and settling.

A smooth base layer also improves the drape of the next layer on top, because the outer fabric can move over it rather than gripping it.

The middle layer has to open

The middle layer is the one that does most of the work of adjusting to temperature, and it can only do that if it can be opened or removed without taking everything else off. That means a cardigan rather than a pullover, an open-front shirt rather than a closed tunic, a zip rather than a single pullover.

A middle layer that cannot be opened has to be chosen for the warmest part of the day or the coldest, and it will be wrong for the other one. If a middle layer is a pullover, its value is limited to settings where you will not want to remove it.

It should also be the layer with the least volume relative to its warmth. A thin wool knit gives more warmth per millimetre than a thick cotton one, which leaves more room for the outer layer.

The outer layer carries the room

The outermost layer is where the extra circumference has to be absorbed, so it should be the one with the most allowance. When you try it on, test it over the largest combination of layers you actually plan to wear, because testing it over a single thin shirt does not tell you what happens at the top of the range.

The checks that matter on an outer layer:

• Fasten it completely over your usual layering combination, without pulling at the front.
• Raise both arms above your head and check that the whole garment does not ride up; that means the armhole and back have enough room.
• Reach forward and check the upper back for tightness.
• Check the sleeve length with the layer underneath in place, because the shoulder line will have lifted.
• Sit down and check the hem and the waist, since a longer coat can catch on the seat.

Where the outer layer is a coat or jacket that has to close over everything, it is worth accepting a slightly looser fit than you would choose for a single-layer garment. A coat that fits well over a shirt and badly over a knit is a coat for one season.

What to keep out, and what to put away

Choosing between a few similar layers comes down to how many combinations each one unlocks. There is no need for a large number of them; it is better to have one that works over the common cases.

A useful guide is how many of your existing base and middle layers a given outer layer will accept. One that works over three of them is worth more than one that works over a single combination.

Where a garment fails, the failure is usually a specific one: too tight in the armhole, too short in the sleeve once a layer is beneath, or a front that will not close. Those are the reasons to let it go. A layer that is merely less than perfect in colour is doing its job.

Putting things away between seasons

Storage is where a surprising amount of damage happens, and the errors are simple ones.

Wash everything before it goes away, even if it looks clean. Food, skin oils and perspiration attract insects, and a garment stored with them is the one that will be found with holes. Dry it completely, never with a trace of damp, particularly anything with wool or down.

Do not use rigid wire hangers for knits, because the shoulders will be pushed out of shape over months. Fold heavy knits and stack them. Hang structured garments on shaped or padded hangers so the shoulder line keeps its form.

Protection against insects means clean storage in a sealed container or a breathable cover, kept dark. Do not store a garment in a dry-cleaner’s plastic, which can trap moisture and hold solvents.

Before you decide, test the combination

Put the layers on together, in the order you would wear them, and repeat the armhole, reach, shoulder and seam tests you would use for a single garment. A layering combination is a fit, and it can be judged the same way.

Then walk a few steps and sit down. If the whole stack stays in place, moves with you and does not need constant adjustment, it works. If it does not, one of the layers is the wrong thickness for its position, and that is the layer to change.