Tailors, Dressmakers, and Custom Sewers. Fit and study garments on customers to determine required alterations. Sew garments, using needles and thread or sewing machines. Measure parts such as sleeves or pant legs, and mark or pin-fold alteration lines.
Online tailors sometimes offer to pay for needed alterations at a local tailor. Another new option is the concept where a free test suit is made to the provided measurements and shipped to the customer first. The test suit can be tried on and worn to see where any adjustments are wanted. The final suit is then tailored to the new specifications provided by the test suit fitting.