Things You'll Need
Instructions
Lay the dress on a table or other flat surface.
Use the seam ripper to remove all the stitches around the hem of the dress where you'd like the lettuce edge. If you don't need the length, cut the hem off.
Place the hem under the machine, with the edge of the fabric matched up with the right edge of the machine foot.
Push the foot petal down and sew for 1 inch.
Pull the fabric edge taut and begin to sew again, pulling the fabric against the machine as it goes through. The tugging and stretching of the fabric as it's sewn is what makes the hem wavy.
Continue to sew around the hem of dress, tugging as you sew until you reach your start point. Sew over your start point 1/4 inch then off the fabric.
Clip the threads on the machine, releasing the fabric.