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Flat-Sheet Duvet Cover

If you have a pair of sheets, you can make a duvet cover. Simply pair them up, and straight-line sew the tops and sides together.

flat sheet duvet cover

Photography: Pippa Drummond

Source: Martha Stewart Living, June 2018


Whether a duvet is filled with down, feathers, or an alternative to the two, it should be lightweight, warm, and all-engulfing—the perfect environment for a deep, restorative sleep. Good duvets are expensive; they need to be protected.


It's surprisingly easy—and cost-effective—to make a customized summer-weight comforter cover from two new (or old) flat sheets. Just partner up different shades, or a plain linen with a patterned one, and straight-line sew the tops and sides together. For extra ease, forgo the usual button closures at the bottom and add grosgrain-ribbon ties. This simple, inexpensive cover will help to keep your duvet clean and will eliminate the necessity for a top sheet as well, which means your bed will be easier to make. And since a sheet duvet cover is so easy to make, why not sew a second, for laundry days, while you're at it?


Here's another Good Thing: To keep your comforter neatly in place, turn the cover inside out and sewing two pieces of five-inch-long fabric tape to all four corners. Then tie the fabric tape around each corner of the comforter, and sleep tight.


  • Comforter

  • Flat sheets

  • Fabric scissors

  • Pins

  • Thread (in color matching sheets)

  • Sewing machine and supplies

  • Iron and ironing board

  • Grosgrain ribbon (Pictured: imported chromspun grosgrain ribbon, 5⁄8", in Pink, $2 per yd.,


  1. Select two flat sheets that are the same size as your comforter (e.g., for a twin-size duvet cover, use two twin-size flat sheets).

  2. If necessary, since manufacturers' sizes vary, cut sheets so they are each 2 inches wider than comforter and 3 inches longer (to accommodate seams).

  3. Align sheets so finished top edges match up and wrong sides are facing in. Pin and stitch (using a 1⁄4-inch seam allowance) around three edges, 1 inch from edge of sheets, leaving finished top edge unstitched to serve as the opening.

  4. Turn duvet cover inside out, press with iron, pin, and sew a 1-inch seam, just covering allowance of your first seam. Turn duvet cover right-side out; press again. (You have just made a French seam.)

  5. To hem duvet-cover opening, if desired, turn a 1-inch width under once, then again, making one complete fold. Sew top and bottom together at each corner of opening, about 18 inches toward center, leaving a gap large enough for a duvet to fit through.

  6. Cut 10-inch lengths of ribbon. Pin one piece of ribbon to top and bottom sheets, at approximately 5-inch increments, inside flaps of opening. Sew on ribbons; remove pins.

  7. Slip in comforter and tie ribbons.

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