What Lining Does and How to Add It

Bag lining is a layer of fabric sewn to the inside of your bag to hide seams, add structure, and make the bag last longer. A lined bag looks finished on the inside, protects the outer fabric from wear, and keeps small items from snagging on raw seams. You sew the lining as a separate bag, then attach it to the outer bag by hand or machine.

The basic process is the same whether you are lining a tote, a drawstring bag, or a structured handbag: cut lining pieces to match your outer bag pieces, sew them into a bag shape, then slip it inside the outer bag and stitch the top edges together. Most home sewers can line a straightforward bag in an afternoon.

Key Takeaways

  • Cut lining fabric pieces slightly smaller than your outer bag pieces—usually 0.5 inches smaller on all sides—so the lining sits inside without bunching.
  • Sew the lining pieces together using the same seam allowance as your outer bag, then press the seams flat before inserting it into the outer bag.
  • Slip the finished lining inside the outer bag with wrong sides facing out, then pin and stitch the top edges together by hand or machine.
  • Fold the top edge inward and hand-stitch it closed with a ladder stitch for an invisible seam, or machine-stitch it if your bag design allows.

Choosing and Preparing Your Lining Fabric

Pick a lining fabric that is lighter in weight than your outer bag fabric so it does not add bulk. Cotton quilting fabric, cotton sateen, and lightweight cotton blends work well for most bags. Avoid stretchy fabrics like knits unless your bag is also stretchy. If your outer bag is heavy canvas or denim, use a medium-weight cotton for the lining; if your outer bag is lightweight cotton, use a lightweight cotton print or solid.

Wash and dry your lining fabric before cutting if it is 100 percent cotton, because cotton shrinks slightly. Press it flat with an iron to remove wrinkles. If you are using a print or directional pattern, lay out your pattern pieces so the design runs the same direction on all pieces—this matters most on the front and back of the bag so the pattern does not look upside down on one side.

Cutting Lining Pieces to the Right Size

Measure your outer bag pieces and cut lining pieces 0.5 inches smaller on all sides. If your outer bag front is 10 inches wide and 12 inches tall, cut the lining front 9 inches wide and 11 inches tall. This smaller size prevents the lining from puckering or bunching when you insert it into the finished outer bag.

If your bag has a bottom gusset or side panels, cut lining pieces for those too. Lay your pattern pieces on the lining fabric with the grain running the same direction as on your outer bag pieces. Use a ruler and fabric pencil or chalk to mark the cutting lines, then cut with sharp fabric scissors. Do not skip the pressing step—wrinkled lining is harder to sew and looks sloppy inside the finished bag.

Sewing the Lining Bag Together

Place two lining pieces with right sides together (the pretty sides facing each other) and pin along one edge. Sew with a 0.5-inch seam allowance—the same allowance you used on your outer bag—using a straight stitch and matching thread. Backstitch at the start and end of each seam. Sew all the lining pieces together the same way you assembled your outer bag, leaving one side seam or the entire top edge open so you can turn it right-side out later.

Press all the seams flat with an iron as you go. If your lining has corners, clip the seam allowance at each corner to 0.25 inches so the corners turn out sharp and flat. Do not trim too close to the stitching or the seam will unravel. Once all seams are sewn and pressed, turn the lining right-side out through the opening you left. Press the entire lining bag again, paying special attention to the top edge and any seams.

Inserting the Lining into Your Outer Bag

Turn your finished outer bag inside out so the wrong side (seams and raw edges) faces outward. Slip the lining bag inside the outer bag, also inside out, so the two bags are nested together with wrong sides facing each other. The top edges of both bags should line up. If the lining is too loose or too tight, you cut it the wrong size—it should fit snugly without pulling or sagging.

Pin the top edges of the lining and outer bag together every 2 to 3 inches all the way around. Make sure the lining seams line up with the outer bag seams at the sides. Check that the lining is not twisted inside the outer bag before you stitch. If your bag has handles, make sure they are not caught in the pinned seam.

Stitching the Top Edge Closed

You have two options for closing the top: machine stitch or hand stitch. Machine stitching is faster and stronger; hand stitching is invisible from the outside. For a machine-stitched finish, sew around the top edge with a 0.5-inch seam allowance using a straight stitch. Backstitch at the start and end. Trim the seam allowance to 0.25 inches and finish the raw edges with a zigzag stitch or pinking shears to prevent fraying.

For a hand-stitched finish, fold the raw edges of both the outer bag and lining inward by 0.5 inches and press with an iron. Pin the folded edges together, then use a ladder stitch (also called a slip stitch) to close the opening. Bring the needle up through one folded edge, slide it horizontally inside the fold for about 0.25 inches, then come back out and cross over to the other folded edge. Repeat all the way around. The stitches will be hidden inside the fold, making the seam invisible from the outside.

Finishing Touches and Common Mistakes

Once the top is closed, turn your bag right-side out through one of the side openings (if you left one) or straightforward reach in and pull the outer bag out. Press the top edge flat with an iron to set the stitches. If you see any puckering or loose stitches, you can hand-stitch them down from the inside.

The most common mistake is cutting the lining the same size as the outer bag—this causes bunching and makes the bag hard to turn right-side out. The second mistake is not pressing seams as you go, which leads to a wrinkled, unprofessional-looking lining. The third is sewing the lining with the same seam allowance as a much heavier outer bag; if your outer bag uses a 0.75-inch seam allowance, use 0.5 inches for the lining so it fits inside without bulk. Take your time at the top edge—this is what people see and touch, so neat stitching matters here more than anywhere else in the bag.

Frequently Asked Questions

Do I have to line my bag?

No, but lining makes a bag look finished, protects the outer fabric, and hides seams. An unlined bag is faster to make and works fine for casual bags or totes that will not get heavy use. Lined bags last longer and look more polished.

Can I use the same fabric for the lining as the outer bag?

Yes, but it usually looks better if the lining is a different color or pattern. Using the same fabric can make the inside look unfinished. If you do use the same fabric, choose a lighter weight version so the lining does not add bulk.

What if my lining is too loose inside the outer bag?

You cut it too small. Rip out the top stitches and remove the lining. Cut new lining pieces only 0.25 inches smaller on all sides instead of 0.5 inches, then sew and insert again. The fit should be snug but not tight.

Can I add pockets to the lining?

Yes. Sew patch pockets to the lining pieces before you sew the lining bag together. Position them on the inside front or back, about 2 to 3 inches from the top edge so they do not interfere with the top seam. Sew around three sides of the pocket, leaving the top open.

How do I keep the lining from shifting inside the bag?

Pin the lining to the outer bag at the side seams before you stitch the top edge. You can also tack the lining to the outer bag at the bottom corners with a few hand stitches, but this is optional for most bags.