How do you properly measure for a hem?

To properly measure for a hem, it is essential to determine the desired length of the garment and then add the seam allowance. This process ensures that once the fabric is folded over and sewn into a hem, the final length of the garment remains as intended. The seam allowance is the extra fabric required to accommodate the stitching and folding process, which could vary depending on the type of hem being used or the fabric itself.

For instance, if you want the finished length of a dress to be 40 inches, and the hem requires a 2-inch seam allowance, you must measure 42 inches to account for the hem. This attention to detail is crucial in garment construction, as it helps avoid situations where the final product is shorter than planned.