This section is from the book "Clothing For Women: Selection, Design, Construction", by Laura I. Baldt. Also available from Amazon: Clothing For Women: Selection, Design, Construction.
This should be tested as carefully as the shirtwaist pattern. The principles applied to alterations in shirtwaists will also apply to this type of waist. In testing the bust measure, be careful to keep within the seam lines. A necessary increase or decrease of the bust measure can usually be taken care of in the seams, instead of by enlarging the pattern, as there are more seams which permit this.
If only a small amount needs to be added to the length, cut the pieces of the pattern about two inches above the waist line, and separate them sufficiently to give the necessary amount. If the figure is very long from the shoulder to the bust, it may also be necessary to cut the front, side front, back and side back pattern across the widest part of the back and front, and separate the pieces for additional length.
Treat in the same manner as you would the shirtwaist sleeve, both above and below the elbow, if necessary, to lengthen or shorten. The width of the sleeve may be taken care of in the seams, unless a great deal of difference occurs. If the latter, follow directions for same alteration in shirtwaist sleeve.
1. What is the advantage of using a commercial pattern?
2. How would you interpret a commercial pattern?
3. How would you alter a waist pattern that measured too small in the bust? A sleeve that was too short?
5. At what part of the waist pattern would you fold it to decrease the length? Where fold skirt pattern for the same alterations?