The Watchtower—Study Edition | September 2016
18 How grateful we are that Jehovah does not burden us with detailed lists of regulations about our dress and grooming. Instead, he has permitted us to exercise our free will and make sensible personal decisions, which should be guided by sound Scriptural principles. Thus, even in our dress and grooming, we can show that we want to ‘walk in modesty with our God.’—Mic. 6:8.

Will your style of dress generate respect for the God you represent? (See paragraphs 7, 8)
11 When making decisions about what to wear, God’s servants take into account that “there is a time for every activity and every action.” (Eccl. 3:1, 17) It is understandable that different climates and the change of seasons influence what we wear. So do varying circumstances and living conditions. Jehovah’s standards, however, do not fluctuate with the weather.—Mal. 3:6.
This article is very ambiguous! Jehovah does not burden us with rules about dress and grooming. Witnesses have free will when it comes to dress and grooming.
The photo above shows a ''worldly'' woman who is dressed business attire and two sisters who are shown in field service dressed in skirts below the knee. Let me guess which type of dress Jehovah prefers?
Also, Jehovah has the standards ( not the Watchtower Society ) that woman should not wear slacks in field service and congregation meetings, where winters are brutal.