What a crib bed skirt is and why you'd make one

A crib bed skirt (also called a dust ruffle) is a piece of fabric that hangs from the mattress frame down to the floor, hiding the space under the crib and catching dust. It's a straightforward sewing project that takes an afternoon and costs less than buying one finished. You'll need basic sewing skills—straight seams and a working sewing machine—but no advanced techniques.

The finished skirt consists of three parts: a flat platform that sits on top of the mattress frame, a long strip of fabric that hangs down the sides and foot of the crib, and a ruffle or gathered edge along the bottom. Standard crib mattresses are 28 inches wide by 52 inches long, and the skirt typically hangs 12 to 14 inches from the frame to the floor.

Key Takeaways

  • Measure your crib's mattress frame and the distance from frame to floor before cutting any fabric, because crib dimensions vary slightly between brands.
  • You need a flat platform piece and a long drop piece; the drop is sewn to the platform with a ruffle or gathered edge at the bottom.
  • Pre-wash and dry all fabric before cutting to prevent shrinkage after the skirt is finished and on the crib.
  • A basic bed skirt uses two fabric pieces and takes about three to four hours from cutting to the final seam.

Taking accurate measurements of your crib

Measure the top of your mattress frame (not the mattress itself) from corner to corner and side to side. Write these numbers down. Standard cribs are 28 by 52 inches, but some convertible models and vintage cribs vary. Measure the distance from the top of the frame straight down to the floor where you want the skirt to end—usually 12 to 14 inches, but measure your own crib.

Measure three times. Measure on both sides of the crib and at the foot. If the floor is uneven, use the longest measurement. Add one inch to the drop length for seam allowance at the top where the drop attaches to the platform.

Choosing and preparing your fabric

Pick a medium-weight cotton or cotton blend—quilting cotton, broadcloth, or home décor fabric all work well. Avoid knits and very stretchy fabrics; they're harder to control and won't hang straight. You'll need enough fabric to cut one platform piece and one long drop piece, plus a ruffle strip if you want a gathered bottom edge.

Pre-wash all fabric in warm water and dry it on medium heat before you cut anything. This prevents the finished skirt from shrinking unevenly after it's sewn and installed. Let the fabric cool and lay it flat on a clean surface before measuring and cutting.

Cutting the platform and drop pieces

The platform is the piece that sits on the mattress frame. Cut it to the exact measurements of your frame—28 by 52 inches for a standard crib. This piece doesn't need seam allowance because it sits on top of the frame and won't be seen.

The drop piece is one long rectangle that wraps around three sides of the crib (both long sides and the foot; the head of the crib sits against the wall or headboard). Calculate the length: add the two long sides (52 inches each = 104 inches) plus the foot (28 inches) = 132 inches total. The width is your measured drop distance plus one inch for seam allowance at the top. For a 13-inch drop, cut the drop piece 14 inches tall and 132 inches long.

If your fabric isn't wide enough to cut a 14-inch-tall piece in one go, cut two or three strips and sew them together end-to-end with a half-inch seam allowance before attaching to the platform. Press the seams flat with an iron.

Sewing the drop piece to the platform

Lay the platform piece on a flat surface with the right side (the side you want to show) facing up. Lay the drop piece on top of it, right side down, so the raw edges line up along three sides of the platform—both long sides and the foot end. The head end of the platform stays uncovered.

Pin the drop piece to the platform every 4 to 6 inches, keeping the edges even. Sew with a half-inch seam allowance along all three pinned sides, using a straight stitch and a thread color that matches your fabric. Backstitch at the start and end of each seam. Remove pins as you sew.

Press the seams flat with an iron, then press them toward the platform. Trim any loose threads with scissors.

Adding a ruffle or gathered edge

A gathered ruffle at the bottom gives the skirt a finished, soft look. Cut a ruffle strip from your fabric 4 to 5 inches tall and 180 to 200 inches long—the extra length creates the gather. If you need to piece strips together, sew them end-to-end first and press the seams flat.

Fold the ruffle strip in half lengthwise, right sides together, and sew the short ends together with a quarter-inch seam. Turn it right side out and press flat so the fold is on one long edge and the raw edges are on the other.

Set your sewing machine to a long stitch (4.0 or 5.0 on most machines). Sew two parallel lines of long stitches along the raw edge of the ruffle, one quarter-inch from the edge and one half-inch from the edge. Don't backstitch. Leave long thread tails at both ends.

Pull the bobbin threads (the threads on the underside) to gather the ruffle until it's the same length as the bottom edge of the drop piece—about 132 inches. Distribute the gathers evenly. Pin the ruffle to the bottom edge of the drop piece, right sides together, and sew with a half-inch seam allowance using a normal stitch length. Remove the gathering threads with a seam ripper.

Finishing and installing the bed skirt

Press all seams flat. Trim any loose threads. Try the skirt on your crib: lay the platform on the mattress frame and let the drop and ruffle hang down. The ruffle should just touch the floor or be a quarter-inch above it. If it's too long, trim the bottom edge evenly and finish it with a zigzag stitch or pinking shears to prevent fraying.

To install, place the mattress on the crib frame, then lay the platform on top of the mattress. Arrange the drop and ruffle so they hang evenly on all three sides. The skirt will stay in place under the weight of the mattress. If you want extra security, you can sew small loops to the underside of the platform and tie them to the frame with ribbon, but this is optional for a standard crib.

Common mistakes to avoid

Not measuring your specific crib before cutting is the most common error. Crib dimensions vary, and a skirt that's too short or too long looks unfinished. Measure twice and write the numbers down.

Skipping the pre-wash step causes the skirt to shrink unevenly after installation, creating puckers and loose spots. Wash and dry all fabric before you cut.

Sewing the drop piece to the platform with the wrong sides together (so the seams show on the outside) ruins the look. Always check that right sides are facing each other before you sew.

Making the ruffle too short defeats the purpose—it won't gather properly and will look flat. Cut the ruffle strip at least 180 inches long, even for a standard crib.

Frequently Asked Questions

Can I make a bed skirt without a ruffle?

Yes. Skip the ruffle strip and straightforward finish the bottom edge of the drop piece with a zigzag stitch or pinking shears to prevent fraying. Hem the bottom edge with a half-inch fold if you want a cleaner look. This takes less time and uses less fabric, though the skirt won't have the soft, gathered appearance.

What if my crib has a headboard attached?

Measure the three exposed sides (both long sides and the foot) and cut your drop piece to fit only those sides. The headboard covers the head end, so you don't need fabric there. Calculate the drop length the same way, just for the three sides you're covering.

How do I keep the skirt from shifting when the baby moves?

The weight of the mattress holds the platform in place. If you're concerned about movement, sew small fabric loops (1 inch long) to the underside corners of the platform and tie them to the crib frame with ribbon or twine. This is optional but adds security without damaging the crib.

Can I use a patterned fabric or do I need a solid color?

Use whatever fabric you like. Patterned fabrics work just as well as solids. If your pattern has a direction (like stripes or a one-way print), make sure all pieces are cut in the same direction so the pattern doesn't look upside down on different sides of the crib.

How long does this project take from start to finish?

Three to four hours for a first-time sewer, including measuring, cutting, sewing the platform and drop together, making and attaching the ruffle, and pressing. If you skip the ruffle and just hem the bottom, you can finish in two to three hours.