Silks

Brief, sleeveless garments made of silk, usually short. Definitely worn only by slave girls, though not all slave girls wore silks. The status of slave girls is often denoted by the color of her silks (though she may not actually be wearing the silks). For example, a girl may be wearing the silks of a Slaver (blue and yellow in color) and depending on her experience, is called 'white silk' or 'red silk'. The silk colors (especially red and/or white seemed to used as labels as much as actual colors of their garments)

White: denotes a virgin (though often the girl doesn't actually wear white silks, if she is a virgin, she is said to be 'white silk')

Yellow: worn by paga slaves..girls who serve paga in the taverns and can be bought for the price of a cup of paga.

Red:a slave who is not a virgin (though again, the girl doesn't actually wear red silks all the time, if she is a slave who is not a virgin, she is red silk)

Gray:state/city owned slaves (say a girl had a Master who owed taxes to the city, but was unable to pay them...often, the city would claim the slaves instead. These girls were often rented out to citizens to earn their keep)

Various: The silks came in many styles and colors...striped, tunic-styles or halters...dancing silks, etc etc... "I noted her throat was encircled by a collar of gray metal. I supposed it indicated that she was a state slave of Tharna."
Outlaw of Gor, page 102

" 'Are you white silk?' I asked. 'I am virgin,' she said. 'Then you are white silk.' I said."
Explorers of Gor, page 172

""She trembled. I kissed her upon the lips. Her body, that of a white-silk girl, fresh to the collar, was terribly frightened."
Hunters of Gor, page 95

" 'To be sure,' I said, '"white" in the context of "white-silk girl" lends less to suggest purity and innocence to the Gorean than ignorance, naivety, and a lack of experience. One expects a red-silk girl, for example, to not only be able to find her way about the furs, but, subject to the whip, owned and dominated, perhaps chained, to prove herself a sensuous treasure within them."
Savages of Gor, page 206

" The buyers were also informed that I was 'glana' or virgin. The correlated term is 'metaglana' used to designate the state to which the glana state looks forward, or that which it is regarded as anticipating. Though the word was not used of me I was also 'profalarina' which term designates the state preceding, and anticipating that of 'falarina' or the state Goreans seem to think of as that of being a full woman, or, at least, as those of Earth might think of it, one who certainly is no longer a virgin. In both terms, 'glana' and 'profalarina' incidentally, it seems that the states they designate are regarded as immature or transitory, state to be succeeded by more fully developed, superior states, those of 'metaglana' or 'falarina.' Among slaves, not free women, these things are sometimes spoken of along the lines as to whether or not the girl has been 'opened' for the uses of men. Other common terms, used generally of slaves, are 'white silk' and 'red silk' for girls who have not yet been opened, or have been opened, for the uses of men, respectively."
Dancer of Gor, page 128

"Similarly, the expression, 'red-silk,' in Gorean, tends to be used as a category in slaving, and also, outside of the slaving context, as an expression in vulgar discourse, indicating that the woman is no longer a virgin, or, as the Goreans say, at least vulgarly of slaves, that her body has been opened by men. Its contrasting term is 'white-silk,' usually used of slaves who are still virgins, or equivalently, slaves whose bodies have not yet been opened by men. Needless to say, slaves seldom spend a great deal of time in the 'white-silk' category. It is common not to dally in initiating a slave into the realities of her condition."
Blood Brothers of Gor, page 472

"I looked about myself. There were men at the tables, the girls, in slave bells, and yellow silk, serving them. The proprietor had now returned behind the counter, as was polishing paga goblets."
Hunters of Gor, page 55

"She came through the kitchen door, in the tiny slip of diaphanous yellow silk alotted to paga slaves, bells locked on her left ankle."
Hunters of Gor, page 56

"The other girls, the common slaves, like Tendite, went with the price of a cup of paga."
Hunters of Gor, page 55

"I missed in the crowd, the presence of slave girls, common in other cities, usually lovely girls clad only in the brief, diagonally striped livery of Gor, a sleeveless, briefly skirted garment terminating some inches above the knee, a garment that contrasts violently with the heavy, cumbersome Robes of Concealment worn by free women."
Outlaw of Gor, page 66

"...on the shoulder or off the shoulder, with high necklines or plunging necklines, in open or closed garments, tightly or flowingly, and in various lengths...in halters and G-strings, or mere G-strings...in strips wound about her body...in brief tunics...wraparound tunics...or with a disrobing loop...at the left shoulder."
Dancer of Gor, page 225

"He nodded to the girl. To the music she unhooked her slave halter of yellow silk and, as though contemptuously, discarded it...."
Tribesmen of Gor, page 104

"She wore the briefly skirted, sleeveless slave livery common in the northern cities of Gor, the livery was yellow and split to the cord that served as her belt; about her throat she wore a matching collar, yellow enameled over steel."
Assassin of Gor, page 7

"Low on her hips she wore, on a belt of rolled cloth, yellow dancing silk, in Turian drape, the thighs were bare, the front right corner of the skirt thrust behind her to the left, the back left lower corner of the skirt thrust into the rolled belt at her right hip. She was barefoot; there were golden bangles, many of them, on her ankles, more on her left ankle. She wore a yellow-silk halter, hooked high, to accentuate the line of her beauty. She wore a gold, locked collar, and, looped about her neck, many light chains and pendants; on her wrists were many bracelets; on her upper arms, both left and right, were armlets, tight, there being again more on the left arm. She shook her head, her hair was loose."
Tribesmen of Gor, page 87

"From one side a slave girl, barefoot, bangled, in sashed, diaphanous, trousered chalwar, gathered at the ankle, its tight, red-silk vest, with bare midriff, fled to him, with the tall, graceful, silvered pot containing the black wine. She was veiled. She knelt, replenishing the drink. Beneath her veil, I saw the metal of her collar."
Tribesmen of Gor, page 88