What is the ruling on sewing clothes for women that do not cover the 'awrah and are worn in front of non-mahrams? Does the seamstress share in the sin of the wearer, along with a clarification of the guidelines for sewing?

The ruling on sewing clothes varies according to the environment and the woman's situation. If the environment or the woman predominantly adheres to the legal hijab, then there is no objection. However, if immodesty prevails, then sewing is not permissible because it aids in what is forbidden. The guidelines that the tailor must adhere to are honesty and proficiency, and that the garment should not resemble the clothing of disbelieving women or men, nor should it be a garment of ostentation.