BTW, I personally am not opposed at all to the idea of wearing garments OVER regular underwear – even though I know that is not the Church’s standard.
For women, at least, that standard has changed over the years based on feedback from female members. It is perfectly acceptable to wear the garment over one’s underwear, and this is generally (although not completely consistently) stated by those in distribution. That used to not be the case. However, I’m not in favor of more layers, so not an important win for me.