My daughter got a cute little pajama set for Christmas, and it came with a little headband and some matching ballet slippers. She's not one to normally keep things in her hair, but she loves this little headband. So, I decided to make them myself, as they didn't appear too hard to make. The measurements for this one produced one too small for her head, but fits my 4 month old pretty well, so I'm sharing it here.
What you'll need:
4"-6" of elastic, I used 1/4" braided. It was 5" unstretched.
Light weight interfacing for the top piece
1 13"x3 1/2" strip of fabric for top
3. Iron the right sides together lengthwise, and sew a 1/4" seam along the long side to form a tube. Turn right side out, and press, with the seam in the middle of the back.
4. Fold your casing piece in half lengthwise, and press. Sew a 1/4" seam down long side, forming a tube. Turn right side out, and press with seam in the middle.
5. Thread elastic through casing, and pin each end into the openings of the top piece.
6. Sew openings closed.
If you want to make it larger, just increase the length of the top piece.