Fashion Academy · Garment anatomy
A cardigan is a knitted upper-body garment with a full front opening, usually fastened with buttons or left open for layering. This lesson uses a classic V-neck design with set-in sleeves, ribbed edges and patch pockets. Cardigans can be fully fashioned, knitted in panels or cut and sewn from knitted fabric, so the exact assembly method varies.
From neckline to ribbed hem
The garment depends on controlled stretch, balanced bands and accurate symmetry. Each labelled part contributes to the way the cardigan closes, hangs and recovers after wear.
01
The V-neckline creates the cardigan's open front shape and determines how high or low the first fastening sits. Its angle affects both style and stability. A deep V removes more support from the upper chest, so the knitted edge must recover cleanly instead of stretching out. On a garment knitted to shape, the neckline can be formed through decreases. In cut-and-sew knitwear, the curve is cut from fabric and stabilised before the band is attached.
02
The ribbed neckband follows the back neck and both sides of the V, then continues towards the front opening. Rib structure contracts more than the main knit, helping the edge sit close to the body. Its finished length must balance control with comfort. If it is too long, the neckline can ripple; if it is too short, the front may pull upwards. The join at the base of the V needs precise shaping so it lies flat rather than forming a bulky overlap.
03
The front opening bands create the two vertical edges that meet when the cardigan is closed. One carries buttonholes and the other supports the buttons. Their width, firmness and length must match so the fronts hang evenly. Bands may be knitted as part of the garment, picked up later or cut separately from rib fabric. Whatever the method, the two sides should mirror each other and should not stretch the cardigan body during attachment.
04
Buttonholes are the reinforced openings that receive the buttons. Their size must suit the button diameter and thickness, allowing the fastening to pass through without slipping open during wear. On knitted cardigans they may be formed within the knitting, worked into a separate band or created by a carefully stabilised machine method. Accurate spacing matters because uneven gaps can make the front edge buckle. The top and bottom placements also affect how securely the neckline and hem stay closed.
05
Buttons provide the visible fastening and help establish the rhythm of the front design. Their weight should be appropriate for the knit, as heavy buttons can drag a soft band out of shape. Each button is aligned with its buttonhole and sewn through a supported area, sometimes with a small backing button on the inside. Enough thread shank is needed for the band thickness. Before final sewing, close the cardigan flat to check that the fronts meet without twisting.
06
The shoulder seam joins the front and back at the top of the garment and supports much of the cardigan's hanging weight. Knit fabric can lengthen here, so the seam often benefits from reinforcement such as clear elastic, narrow tape or a stable knitted join. Its angle influences how the neckline and sleeves sit. Matching the neckline ends and armscye edges accurately keeps the garment balanced, while careful pressing or gentle steaming avoids flattening the knit texture.
07
The armscye seam joins the sleeve to the cardigan body. In a set-in style, the sleeve head is shaped to fit the curved armhole, giving a familiar shoulder line. Fully fashioned cardigans may use visible linked or seamed construction, while cut-and-sew versions are stitched and neatened more like other knit garments. The seam must allow movement without excessive bulk. If the sleeve is rotated incorrectly, the whole arm can twist even when the seam itself looks tidy.
08
The sleeve body covers the arm from the armscye to the cuff. Its width controls ease at the upper arm and tapers towards the wrist in this classic shape. Knit stretch provides comfort, but stretch does not compensate for poor proportions. A sleeve that is too narrow can pull the shoulder and front opening out of alignment. The grain or wale direction should run straight down the arm, and both sleeves need matching length, shaping and pattern placement.
09
The ribbed cuff finishes the sleeve and draws the lower edge gently towards the wrist. Its extra recovery helps it return to shape after the hand passes through. The cuff may be knitted continuously with the sleeve or attached as a separate band. Its seam should align with the sleeve's underarm seam, and the join should stretch without breaking. A cuff that is too tight feels restrictive, while one that lacks recovery soon looks loose and tired.
10
The two front body panels form the cardigan's chest and lower front, divided by the opening. They carry the neckline shaping, fastening bands and pockets, so small differences between the left and right sides become easy to notice. Their length, width and knit tension should match. On shaped cardigans, decreases or seam contours control the waist and bust. Before joining the shoulders and sides, compare both fronts flat to catch asymmetry early.
11
The back body panel provides the main uninterrupted area of the cardigan and establishes its overall width and length. It connects to the fronts at the shoulders and side seams. The back neckline must match the neckband, while the armholes must correspond with the sleeves. In knitted garments, the back can grow under its own weight, especially in loose or heavy yarns. Resting and measuring the pieces before assembly helps prevent a back that finishes longer than the fronts.
12
A patch pocket is applied to the outside of the front panel rather than hidden inside a seam. Its position affects both function and proportion, so the two pockets must sit at equal height and distance from the opening bands. The pocket piece should be stabilised enough to hold small items without sagging. It is usually attached with a neat edge stitch, linked seam or hand method that secures the edges without making the soft knit look rigid.
13
The pocket opening is the upper edge where the hand enters. A ribbed or doubled finish helps it resist stretching, because this edge receives repeated handling. Its width must be comfortable but not so wide that the pocket gapes. The corners are common stress points and need secure attachment. When matching two pockets, check the opening line against the cardigan hem and front bands, since even a slight slope is visible on an otherwise symmetrical front.
14
The side seam joins each front panel to the back from the underarm to the hem. It shapes the body and keeps the front opening centred. Fully fashioned knitwear may use mattress stitch or linking, producing a flexible, low-bulk join. Cut-and-sew versions usually require a stretch-compatible seam and a controlled finish. Pattern rows, pocket levels and hem bands should align across the seam. Pulling one layer during sewing can make the hem twist or one front appear shorter.
15
The ribbed hem band finishes the lower edge and helps the cardigan return towards the body. Its depth and tension influence the silhouette: a firmer band creates a slight blouson effect, while a relaxed band hangs straighter. The front opening bands should meet it cleanly at both corners. When attached separately, the hem is distributed evenly without obvious gathers. After construction, gentle blocking or steaming can settle the join while preserving the rib's natural recovery.
A well-made cardigan should feel soft without becoming shapeless. The neckline, front bands, seams and ribbed edges work together to hold the structure while the knit supplies the comfort.
