Uniform information can be found on the NAWGJ website here. It might be advantaqous to try and existing judges jacket on for sizing before purchasing. Lands End is the official supplier of NAWGJ uniforms.
The official uniform is not required when you first begin judging. In Rules and Policies the dress code is as follows:
Navy Skirt or pants and jacket with a white blouse. There is nothing stated about footwear. (Heels are discouraged because they can damage gymnastics mats) Business appropirate attire is suggested. Make sure your clothes are clean and that you look PROFESSIONAL!!
A great place to buy comfortable professional looking navy blue slacks is through Donalds Uniform. The slacks are called Tribal Dress pants – Yoga Style. The sizes run slightly big. If you have additional questions about what to wear/what not to wear, don’t hesitate to give Heather, Wendy or your assigned mentor a call.