A New Jersey art teacher has pledged to wear the same outfit for 100 days to teach students about sustainability, the AP reports. William W. Allen Middle School teacher Julia Mooney tells WPVI-TV that wearing a different outfit each day is "very wasteful" and that the fashion industry is a "huge polluter." The art teacher wears an apron during class time to avoid stains. Mooney says she washes the dress and even has a backup. Mooney ultimately hopes her sustainability project will serve as an example for students. She plans to continue documenting her progress and sharing lessons about green practices through an Instagram page. (More New Jersey stories.)