Custom of the single girls to dress in white clothing when going out to find husbands, all of them borrowing the clothing to prevent embarrassment of those who don't have: Taanit 26b, 31a
Which strata of society borrowed clothes from which for this purpose: Taanit 31a
All of the clothing was immersed to prevent embarrassment of girls who were menstruating: Taanit 31a
The girls telling their virtues to the single men, in an attempt to attract them for marriage: Taanit 26b, 31a