Free guide

How vintage knitwear should fit: ease and silhouette, 1940s to 1980s

A 1940s sweater and a 1980s sweater can both say "to fit 36" bust". One hugs you to the waist. The other drapes to your hips with sleeves like wings.

Neither is wrong. They're built with very different amounts of ease, and getting the ease right is what separates a vintage knit that looks right from one that just looks a bit off.

What ease means

Ease is the difference between the garment and your body.

Positive ease: the garment is bigger than you. A 40" sweater on a 36" bust has 4" of positive ease.
Zero ease: garment and body match.
Negative ease: the garment is smaller and stretches to fit. A 34" sweater on a 36" bust has 2" of negative ease.

Yarn industry guidance groups bust ease roughly like this. Two widely used charts disagree about the closest-fitting categories, so we've given both:

Fit	Ease at bust
Very close fitting	2–4" negative (one chart) or 0" (the other)
Close fitting	0" (one chart) or 1–2" positive (the other)
Standard	2–4" positive
Loose	4–6" positive
Oversized	6" or more

Drop-shoulder designs often go well beyond that, with 6–12" of ease being common.

The number to look for in any pattern

Vintage patterns usually give a "to fit" bust: the body the garment was designed for. Better ones also give the actual (finished) measurement: the garment itself.

The gap between the two is the designer's ease, and it's the most useful number in the whole pattern. "To fit 34", actual measurement 36"" means the designer intended 2" of positive ease.

If the pattern only says "to fit", you can find the actual size yourself. Divide the stitches at the underarm by the stitches per inch, then add front and back together. Our gauge (tension) guide shows how to read stitches per inch.

Decade by decade

1940s: close, short and neat

Knitwear was fitted and short. Sweaters usually finished around the natural waist with a deep ribbed welt that pulled the garment in, so it sat neatly over a high-waisted skirt. The overall shape was a defined waist, a soft bust and fuller, squared shoulders.

Ease was usually small. Many designs work out at around 0–2" of positive ease, and some, ribbed sweaters especially, were made to stretch with negative ease. Not everything was skin-tight, though. Shop-bought sweaters were often bought a couple of inches bigger to go over a thin blouse, and teenagers wore deliberately baggy "sloppy joe" sweaters.

Puffed or gathered sleeve heads were popular, especially in earlier styles. Short sleeves just above the elbow and long sleeves with snug cuffs were both common.

Wear one today with a high-waisted skirt or trousers. Lengthen the body and it stops looking 1940s.

1950s: fitted sweaters, easier cardigans

The close fit stayed and the hourglass got stronger: neat, fitted pullovers worn with full skirts or slim pencil skirts. The snug "sweater girl" look, popularised in the 1940s and 1950s, relied on the structured underwear of the time.

It wasn't all tight. Cardigans were often a little straighter and easier, sometimes buttoned only at the top or worn over the shoulders, and the matching twinset (a short-sleeved top with a cardigan) was a staple. Dolman sleeves, cut in one with the body, were a fashionable choice for more relaxed styles, though the shape had been around since the 1930s.

Fitted pullovers sit around 0–2" of ease; cardigans and dolman styles more like 3–6".

Tuck a fitted sweater into a high waist, or wear a boxy cardigan open over a slim top.

1960s: two directions at once

Mod styles were slim: close-fitting skinny ribs, turtlenecks (polo necks) and short "poor boy" sweaters. Alongside them came looser, boxier shapes falling straight from shoulder to hip, simple collarless cardigans, and sleeveless shells that worked under jackets or on their own. Raglan sleeves, with their diagonal shoulder lines, suit that clean look and are well worth watching for in patterns from the period. Chunky, textured knits and big rolled collars arrived later in the decade.

Slim mod styles sit near zero ease or slightly negative. Boxy shapes and shells are about 2–4".

A shell or boxy sweater looks right over cropped trousers or a straight skirt.

1970s: longer, looser, layered

Bodies got longer. Hip-length tunics over wide trousers, longer cardigans (some wrapped and belted) and smock-style tops with gathers are all typical. Knitted vests (tank tops, or slipovers) worn over shirts were hugely popular. Many patterns have deeper armholes and fuller sleeves than their 1950s equivalents, and the fit generally relaxed as the decade went on.

Expect roughly 2–6" of ease on most garments. Vests worn over a shirt typically have a little more than a fitted sweater.

Layer a vest over a blouse, or wear a long cardigan with flares or a midi skirt.

1980s: go big

Oversized sweaters with dropped shoulders (where the shoulder seam sits down on the upper arm), batwing or dolman sleeves (cut wide at the body and narrowing to the wrist), and bold, patterned hand knits defined the decade. Shoulder pads were common even in knitwear, sometimes attached with Velcro so they could come out. Hand knitting had a revival, and heavy, colourful pattern-book sweaters were in demand.

Ease was large and deliberate. Six inches or more of positive ease was normal, and batwings and drop shoulders were often far roomier.

Keep the volume and balance it with slim trousers or leggings. Make it smaller and it becomes something else.

At a glance

Decade	Typical silhouette	Typical bust ease	Body length	Sleeves
1940s	Close-fitting, defined waist, squared shoulders	about −2" to 2"	Waist, deep rib welt	Puffed or gathered early on; short or long with snug cuffs
1950s	Fitted hourglass pullovers; boxier cardigans, twinsets	about 0–2" (pullovers), 3–6" (cardigans, dolmans)	Short, waist to high hip	Slim set-in, short sleeves, dolman
1960s	Slim mod ribs and turtlenecks; boxy shifts and shells	slightly negative to about 4"	Hip	Raglan, set-in, sleeveless
1970s	Longer and relaxed; tunics, wraps, smocks, vests	about 2–6"	Hip to tunic	Fuller sleeves, deeper armholes
1980s	Oversized, dropped shoulders, batwing, shoulder pads	6" and up	Hip or longer, often with a deep rib	Drop shoulder, batwing, dolman

These are general patterns; individual designs vary, so always check the pattern's own numbers.

Choosing your size

Measure your full bust over the bra you'll wear, keeping the tape level. Measure your upper arm and back-waist length too (from the bone at the base of the neck to the natural waist).
Find the pattern's intended ease: actual measurement minus to-fit measurement.
Add that ease to your bust. If a 1950s pullover was designed with 2" of ease and you're 40", aim for a 42" garment.
Check the upper arm. Vintage sleeves can be slim. If the sleeve top is less than your upper arm plus about 1", you'll need to widen it.
Check the length against your own back-waist length, but keep the style. A waist-length sweater should still end at your waist.
Between sizes? Pick the one whose finished bust gets you closest to the designer's ease. For oversized styles, choose by the shoulder width you want instead.

If you have a fuller bust, short-row bust darts can help; our plus-size guide explains how.

And there's no "right" body for any of these decades. Good fit just means the garment does what its designer intended, on your body, whatever size that is.

That's the rule we hold our own patterns to. Each one is rebuilt from the original written instructions for your size, yarn and gauge, from US 4–24 / UK 8–28 (a 32–52 in bust), and every size is graded rather than scaled, so a close 1940s sweater stays close and a 1980s batwing stays generous. Got a pattern of your own to check? The Will it fit? tool does the ease arithmetic for you, and a real person answers at support@vintagetomodernknits.com.