The Church of Jesus Christ of Latter-day Saints has released an official video about the sacred clothing Mormons wear in the temple and the sacred garments worn by members under their everyday clothing.
http://www.mormonnewsroom.org/article/temple-garments
The video is intended for those who are not members of the Church and are curious about this practice and includes photos of our sacred temple clothes and undergarments.
The video does an excellent job of contextualizing Mormon practices among other religious traditions and asks those not of our faith to speak respectfully of our sacred clothing as they would about the sacred clothing of their own or other faiths.