A Peter Pan collar is a flat, rounded collar that sits close to the neck

A Peter Pan collar is a small, rounded collar that lies flat against the neckline with no points or lapels. Both front edges curve gently inward, meeting at the center front, and the back edge curves smoothly around the neck. It's one of the easiest collars to sew because it has no stand, no interfacing layers to manage, and no tricky points to turn. You can sew it by hand or machine, and it works on dresses, blouses, and children's clothing.

The collar is cut as two identical pieces of fabric, sewn right sides together, turned inside out, and then stitched to the neckline. The whole process takes about 30 to 45 minutes once you have your pattern pieces cut. The most common mistake is sewing the collar pieces together with the wrong sides facing each other, which leaves you with a seam on the outside of the finished collar.

Key Takeaways

  • Cut two identical collar pieces from your fabric, making sure the grain line runs the same direction on both pieces.
  • Sew the two collar pieces right sides together, leaving the neckline edge open, then turn the collar right side out through that opening.
  • Press the collar flat, then pin it to the neckline with the seam allowance tucked inside the garment.
  • Stitch the collar to the neckline by hand or machine, using a 3/8-inch seam allowance, and finish the raw edges with a zigzag stitch or binding.

Cutting and preparing your collar pieces

Start with a pattern piece for the Peter Pan collar. If you are working from a commercial sewing pattern, use the collar piece included in the envelope. If you are designing your own, draw a rounded shape that is about 2 to 3 inches wide at the center back and tapers to a point at the center front, with both front edges curving gently inward. The neckline edge (the edge that will attach to the garment) should be a smooth curve that matches the neckline measurement of your garment.

Lay your pattern piece on the fabric and cut two identical pieces. Make sure the grain line marked on the pattern runs in the same direction on both pieces—this prevents one collar piece from stretching differently than the other. If your fabric has a nap or a one-way print, cut both pieces in the same direction so the finished collar looks consistent. Pin the pattern to the fabric, cut carefully along the edges with sharp scissors or a rotary cutter, and set the pieces aside.

Before you sew, check that both pieces are exactly the same size and shape. Lay them on top of each other and compare the edges. If one piece is slightly larger, trim it to match the other. This step takes 30 seconds and prevents frustration later when you are trying to match the edges while sewing.

Sewing the collar pieces together

Place the two collar pieces with right sides facing each other—this means the pretty sides of the fabric are touching, and the wrong sides are facing outward. Pin around the outer edge of the collar, leaving the neckline edge (the straight or gently curved edge that will attach to the garment) completely unpinned. This open edge is how you will turn the collar right side out later.

Sew around the pinned edges using a 3/8-inch seam allowance. If you are using a sewing machine, start at one end of the neckline opening and sew slowly around the curved edges, removing pins as you approach them. Sew all the way around to the other end of the neckline opening. If you are sewing by hand, use a running stitch or backstitch and keep your stitches small and even—about 1/8 inch apart.

Once you have sewn all the way around, trim the seam allowance to 1/4 inch using pinking shears or regular scissors. This reduces bulk and helps the collar lie flat when you turn it right side out. Clip into the seam allowance at the curves—make small cuts perpendicular to the seam line, about 1/4 inch apart, being careful not to cut through the stitching. These clips allow the fabric to spread smoothly when you turn the collar, preventing puckering along the curved edges.

Turning and pressing the collar

Reach through the open neckline edge and gently pull the collar right side out. Start by pulling one corner through, then work your way around, using a blunt tool like a chopstick or point turner to push the fabric out from the inside. Be patient—rushing this step can tear the fabric or break your stitches. Once the collar is completely turned, use your fingers to push the seams all the way to the edge so they are crisp and even.

Lay the collar flat on an ironing board and press it with a warm iron. Press from the wrong side first, then flip it over and press the right side. Pay special attention to the outer edges—press them firmly so they stay sharp when you attach the collar to the garment. Let the collar cool completely before moving it; this helps the crease set.

Once the collar is pressed, you can topstitch around the outer edge if you want a more finished look. Topstitching is a line of stitching sewn on the right side of the fabric, about 1/8 inch from the edge. This is optional but adds a professional touch and helps keep the layers from shifting. Use a thread color that matches your fabric or contrasts intentionally, and sew slowly to keep the line straight.

Attaching the collar to the neckline

Pin the collar to the neckline of your garment with the seam allowance folded to the inside. The right side of the collar should face outward, and the open neckline edge of the collar should align with the raw neckline edge of the garment. Start by pinning at the center back and center front, then work your way around, smoothing out any wrinkles as you go. The collar should lie flat against the neckline with no gaps or puckers.

Sew the collar to the neckline using a 3/8-inch seam allowance. If you are using a machine, sew slowly and keep the fabric smooth as it feeds under the presser foot. If you are sewing by hand, use a backstitch and keep your stitches small and even. Sew all the way around the neckline, removing pins as you approach them.

After sewing, trim the seam allowance to 1/4 inch and finish the raw edges with a zigzag stitch on the machine or a whip stitch by hand. If your fabric frays easily, you can also bind the seam allowance with bias tape for a more polished finish. Press the seam allowance toward the garment (away from the collar) and press the collar flat against the neckline.

Finishing the inside of the neckline

The inside of the neckline needs to be finished so the raw edges don't show and the seam allowance doesn't fray. The easiest method is to fold the seam allowance to the inside and hand-stitch it down using a whip stitch or ladder stitch. Fold the raw edge under by about 1/4 inch, pin it in place, and stitch it down with thread that matches your garment. This creates a clean, professional finish on the inside.

Alternatively, you can use bias tape to bind the neckline seam. Cut a strip of bias tape about 1 inch wide and long enough to go around the entire neckline. Fold the bias tape in half lengthwise and press it. Pin the bias tape over the raw seam allowance on the inside of the garment, then stitch it down by hand or machine. Fold the bias tape to the inside and stitch it down again, creating a neat binding that covers all the raw edges.

Common mistakes and how to avoid them

The most common mistake is sewing the collar pieces together with wrong sides facing each other instead of right sides. This leaves the seam on the outside of the finished collar, which looks unfinished. Always double-check before you start sewing: the pretty sides of the fabric should be touching each other, and the seam should be hidden inside when you turn the collar right side out.

Another mistake is not clipping the seam allowance at the curves. Without clips, the fabric bunches up when you turn the collar, creating puckers and wrinkles that won't press out. Take the time to clip the curves before you turn the collar—it takes only a minute and makes a huge difference in how the finished collar looks.

A third mistake is sewing the collar to the neckline with uneven tension or stitches that are too large. This causes the collar to pucker or shift out of place. Sew slowly, keep the fabric smooth, and use small, even stitches. If you are using a machine, use a stitch length of about 2.0 to 2.5 millimeters. If you are sewing by hand, aim for stitches about 1/8 inch long.

Frequently Asked Questions

Can I add interfacing to a Peter Pan collar?

Yes, interfacing adds structure and helps the collar hold its shape. Cut two pieces of interfacing the same size as your collar pieces, fuse one to the wrong side of each collar piece before sewing them together, then proceed as normal. Use a lightweight interfacing so the collar stays soft and flexible.

What if my collar pieces don't match after I cut them?

Lay both pieces on top of each other and trim the larger one to match the smaller one. Use a rotary cutter and ruler for a clean, straight edge. This takes only a minute and ensures both pieces are identical before you sew them together.

How do I sew a Peter Pan collar on a garment that already has a facing?

Sandwich the collar between the garment and the facing. Pin the collar to the neckline of the garment with right sides together, then pin the facing on top with right sides together. Sew through all three layers in one pass, then turn the facing to the inside and press. This creates a clean finish with no raw edges showing.

Can I make a Peter Pan collar from a knit fabric?

Yes, but use a ballpoint needle on your machine to avoid snagging the fabric, and consider using a stretch stitch or a narrow zigzag instead of a straight stitch. Knits move more than woven fabrics, so a flexible stitch prevents the seams from breaking when the garment is worn or washed.

How wide should a Peter Pan collar be?

Peter Pan collars are typically 2 to 3 inches wide at the center back, tapering to a point at the center front. The exact width depends on the size of the garment and the look you want. A smaller collar suits a child's dress, while a larger collar works better on an adult blouse. Check your pattern for the recommended width.