Institutio Oratoria

If we wear the purple stripe, it requires but little care to see that it fills becomingly; negligence in this respect sometimes excites criticism. Among those who wear the broad stripe, it is the fashion to let it hang somewhat lower than in garments that are retained by the girdle. The toga itself should, in my opinion, be round, and cut to fit, otherwise there are a number of ways in which it may be unshapely. Its front edge should by preference reach to the middle of the shin, while tie back should be higher in proposition as the girdle is higher

The fold is most becoming, if it fall to a point a little above the lower edge of the tunic, and should certainly never fall below it. The other fold which passes obliquely like a belt under the right shoulder and over the left, should neither be too tight nor too loose. The portion of the toga which is last to be arranged should fall rather low, since it will sit better thus and be kept in its place. A portion of the tunic also should be drawn back in order that it may not fall over the arm when we are pleading, and the fold should be thrown over the shoulder, while it will not be unbecoming if the edge be turned back.