In my religion (also called LDS or Mormon) once you go through the Temple you start wearing garments. These garments you will wear underneath all of your clothes (except for, of course, swim suits) for the rest of your life. The garments cover your arms so that you wouldn't be able to wear tank tops or sleeveless shirts. The garments cover to your knees (some even go to your calf or ankle) so short shorts and mini skirts (at least to short) are not able to be worn anymore. It helps me wear modest clothes.
Anyway...back to what I was saying. It is so sad that there are girls that are planning to marry in the Temple, yet before they do they are wearing very immodest clothing so they have to buy whole new wardrobes after they start wearing garments. I would think that growing up in the church, and preparing for marrying in the Temple, they would at least have more clothes that are modest so they wouldn't need to get all new clothes when they get married.
I did own tank tops and mini skirts before I married my husband. The only difference was, the miniskirt came to my knee, the tank tops were worn underneath another shirt or over another shirt. I wanted to make sure that when I started wearing garments I had modest clothes to wear with them.
I know there might be some girls who are converts, or are inactive in the church until they get older and they have different standards. So when they are getting married they may have to buy all new clothes. I understand that. I'm just not understanding family's that are strong in the church who have daughters who are wearing short shorts and tank tops.
I really hope I don't offend anyone, I just am wondering why some girls do this when they know they wont be able to wear their clothes after they get married in the temple.