The stola was emblematic of the Roman matron: adulterers and prostitutes were forbidden to wear it. The stola was a garment for women worn under the palla and over the undertunic. It was usually wool. The stola could be pinned at the shoulders, using the undertunic for sleeves, or the stola itself could have sleeves.
The picture shows the fourth century figure Galla Placidia clothed in stola, under tunic, and palla. The stola remained popular from Rome's early years through its imperial period, and beyond.
Photo: Image ID: 1642506. Galla Placidia imperatrice, regente d'Occident, 430. D'ap[res] l'ivorie de La Cathed[rale] de Monza. (430 A.D.). NYPL Digital Gallery