Laxmi’s clothes: The truth is that white color is considered more pure among all colours, that is why it is said that Lakshmi always resides in white clothes.
Clothes of the sacrificer: In ancient times, whenever the sacrifice was performed, both men and women used to sit wearing white clothes. The priestly class used to perform Yagya wearing similar clothes.
On the other hand, even today it is customary to wear white kurta and dhoti in any honor ceremony etc.
Widow’s clothes: If someone’s husband dies, then he is called a widow and if someone’s wife is dead, then he is called a widower. According to the scriptures, on the ninth day after the death of her husband, she has to wear a white sari, abandoning the colors of the world, she cannot do any kind of jewelery and make-up. A woman was to wear only white clothes until a few years after the death of her husband. After that if she wants to change the colour, she can wear very light colored clothes.