In most cases, the hems of knit pants, skirts, dresses, cardigans and sweaters can be shortened, and retain their original finished appearance. Mark the correct length in whatever way is easiest for you. You may put a safety pin at the correct length for a simple alteration. Or, attach a note that say's something like 'Shorten 2 inches".
For more complicated garments, it is best to pin or baste the finished length. This will allow for personal shaping and the correcting of a sagging hemline.
The original style and "finish" of the hem will be retained, unless otherwise requested.
Pricing varies with the knit and the garment. Fine knits, rib knits, double knits, pattern knits and larger sizes will cost more. Large stitch knits and smaller size garments will cost less.
Pants hemming, including St. John Knits usually run between $80.00 and $120.00. Wide leg pants or those with side slits will cost more.
Skirt, dress, cardigan and sweater hems, including St. John Knits average between $80.00 and $150.00 for medium gauge knits. More complicated pieces and fine knits will run more.
Shortening hems of fine gauge wool and cashmere sweaters usually runs between $125.00 and $180.00. They turn out beautifully and look just like they did originally. And, they are the right length!