A placket is an opening or slit made in the upper part of a petticoat or skirt for convenience in putting it on.
A placket on a dress is frequently faced on the right-hand side with an extension hem attached to the left-hand side; the right-hand side should be lapped over at the bottom of the vent and stitched.
The vent in a lady's skirt should be ten inches long, but in a petticoat the length of the vent will depend upon the depth of the yoke or band.
1. Leave one of the seams of the skirt open the desired length, or
2. If the seam is not in proper place for the placket, cut a vent the proper length; cutting the vent with a thread of the muslin.
3. Turn the skirt wrong side out.
4. On the right-hand side of the vent, make a hem one-fourth of an inch wide, narrowing it to a point and rolling it at the bottom.
5. On the left-hand side, make a hem three-fourths of an inch wide, keeping it the same width all the way down.
ILL. 35 - The Placket.
6. Turn the skirt right side out; the wide hem is now on the right-hand side and the narrow one on the left.
7. Lap the three-fourths-of-an-inch hem over the narrow one on the left-hand side at the bottom of the vent, and secure it by two horizontal rows of stitching, about one-fourth of an inch apart. See Illustration No. 35.