What a mandarin collar is and why it's easier than it looks

A mandarin collar is a short, upright collar that stands perpendicular to your neckline instead of folding down. It's the collar you see on traditional Chinese garments, Nehru jackets, and modern casual shirts. The appeal is that it requires no interfacing, no turning, and no topstitching — you're essentially sewing two fabric pieces together, folding them up, and you're done.

The structure is straightforward: two identical collar pieces sewn right sides together, turned right-side out, pressed flat, and then attached to the neckline with a single seam. Because the collar stands up rather than lying flat, you don't have to wrestle with the precision that a traditional collar demands. If your seam isn't perfectly even, the vertical angle hides it.

Key Takeaways

  • A mandarin collar uses two identical fabric pieces sewn together, turned, and pressed before attachment to the neckline.
  • You need a collar pattern piece, two layers of fashion fabric, thread, and a seam allowance of 1/4 inch or 5/8 inch depending on your pattern.
  • The collar is sewn to the neckline with the right sides of the collar and garment facing each other, then folded up and pressed.
  • Topstitching around the outer edge of the collar is optional but makes the collar crisp and helps it hold its shape through washing.

Gathering your pattern and fabric

Start with a pattern that includes a mandarin collar piece. If you're drafting your own, the collar piece is a rectangle or slightly curved shape that wraps around your neck. The width (from neckline to outer edge) is typically 1 to 1.5 inches finished, so you'll cut it 1.5 to 2 inches wide to account for seam allowance. The length should equal your neck measurement plus 1 inch for overlap or a closure.

Cut two identical collar pieces from your fashion fabric — the fabric you want to see on the finished garment. Do not cut interfacing for a mandarin collar; the double layer of fabric is enough structure. If your fabric is very lightweight or slippery, you can use a lightweight fusible interfacing on the wrong side of one collar piece, but it's not necessary for most cottons and blends.

Sewing the two collar pieces together

Place the two collar pieces right sides together — the sides you want to show are facing each other. Pin along the outer edge (the long side that will be visible when the collar is worn) and the two short ends. Leave the neckline edge unpinned; that's where you'll attach the collar to the garment.

Sew around the three pinned sides using a 1/4-inch seam allowance if your pattern specifies it, or 5/8 inch if that's what your pattern calls for. Backstitch at the start and end. Trim the seam allowance to 1/8 inch to reduce bulk, especially at the corners. Clip into the seam allowance at any curves so the fabric will lie flat when you turn it.

Turn the collar right-side out through the neckline opening. Use a point turner or the blunt end of a chopstick to push out the corners so they're sharp. Press the collar flat with an iron, making sure the seam sits exactly at the edge. The neckline edge should be even and smooth.

Attaching the collar to the garment neckline

Pin the collar to the neckline of your garment with right sides together — the raw edge of the collar meets the raw edge of the neckline, and the finished outer seam of the collar faces inward. The collar should sit so that when you fold it up, it will stand at the height you want. Most mandarin collars sit about 1 to 1.5 inches tall.

Sew the collar to the neckline using the same seam allowance as your pattern (usually 5/8 inch). Backstitch at the start and end. If your neckline has a facing or binding, you'll sew through that as well. Trim the seam allowance and press it toward the collar.

Fold the collar up so it stands perpendicular to the garment. Press it firmly with an iron so the fold at the base of the collar is crisp. The raw seam allowance is now hidden inside the collar.

Finishing the collar with optional topstitching

Topstitching — a visible line of stitching on the outside of the garment — is optional but recommended. It holds the collar in place, makes the outer edge look finished, and helps the collar maintain its shape through multiple washes.

Thread your machine with thread that matches your fashion fabric. Starting at one end of the collar, stitch 1/8 inch from the outer edge, all the way around the collar. Pivot at the corners and backstitch at the start and end. This single line of stitching is all you need; a mandarin collar doesn't require the multiple rows that a traditional collar might.

Pressing and wearing your mandarin collar

After you've finished the garment, give the collar a final press with steam or a damp cloth. The collar should stand straight up, with the seam at the base crisp and the outer edge smooth. If the collar flops or leans, it usually means the seam allowance at the neckline is too bulky — trim it further if needed before the final press.

When you wash the garment, the collar may soften slightly. A light press with an iron after washing will restore the shape. Some sewers add a small snap or hook-and-eye closure at the center front if the collar pieces overlap, but many mandarin collars are left open.

Troubleshooting common mandarin collar problems

If the collar twists or leans to one side, the issue is usually uneven pinning or an uneven neckline seam. Check that you pinned the collar evenly around the entire neckline before sewing. If the collar is already attached, you can carefully unpick the seam, repin, and resew.

If the outer edge of the collar is wavy or puckered, you may have stretched the fabric while sewing. Try sewing again with a walking foot, which feeds the fabric evenly, or use a shorter stitch length (2.0 mm instead of 2.5 mm) to reduce puckering. If the collar is already finished, a firm press with steam often smooths minor waves.

If the collar feels stiff or uncomfortable against your neck, the seam allowance at the neckline is likely too thick. Trim it to 1/8 inch or less. You can also try using a lighter-weight fabric for the collar, or use a single layer of fabric instead of two — though this reduces durability.

Frequently Asked Questions

Do I need interfacing in a mandarin collar?

No. The double layer of fabric provides enough structure. If your fabric is very thin or slippery, you can fuse lightweight interfacing to one collar piece, but it's optional for most garments.

Can I make a mandarin collar from a pattern that doesn't include one?

Yes. Measure your neck opening, add 1 inch, and draft a rectangle 1.5 to 2 inches wide. The width becomes the height of the finished collar. Test it on a muslin first to make sure the height and fit feel right before cutting into your fashion fabric.

What's the difference between a mandarin collar and a stand collar?

A stand collar is similar but usually taller (2 inches or more) and may have interfacing. A mandarin collar is shorter, simpler, and relies on the fabric weight alone. The construction method is the same.

Should I topstitch a mandarin collar?

Topstitching is optional but recommended. It keeps the collar crisp, helps it hold its shape through washing, and gives the garment a finished look. A single line 1/8 inch from the outer edge is all you need.

How do I keep the collar standing up after washing?

A light press with an iron after washing restores the shape. If the collar is very soft, you can add a small amount of spray starch before pressing. Some sewers add a snap or hook-and-eye at the center front to hold the collar in place.