Originally Posted by
QuiltnNan
hemming rarely works out just by measuring the length all around. the length is changed by body curves, etc. it is best to have the owner try it on and measure the hem distance from the floor
Totally agree! Unless she has a huge tummy, a skirt will ordinarily need to measure less in length in the front than in the back, and the sides will be different too.
Edit: I should add that I think she threw you off by giving a measurement from the waistline. You really need to measure from the floor, or at least from the existing hemline! Maybe find out the current measurement of each skirt from her waist. If a skirt is currently 30" from the waist, then you would know to shorten that skirt by 6.5" all around. Each skirt is likely to measure a different current distance from the waist, though, so you would need to find out each individual skirt's current distance from the waist to use this method.