No the tunics were worn over the stola Click on images at google and right Ancient roman stolas and the you will see them

Before Arkansas existed as a State the area was home to the Wahzhazhe (Osage) tribe in the north-west, Caddos in the south-west, Quapaws in the east and Tunicas in the far south-east. Later, Cherokees were forced into parts of the area as a result of White expansion further east.

Today there are no officially recognised native groups within Arkansas.

The Indian tribes that lived along the Mississippi were the Chickasaw in the north, the Choctaws in the central and south and the Natchez Indians in the Southwest. Smaller tribes like the Biloxi and the Tunicas lived along the river also.

Little is known of Biloxi culture of the Gulf of Mexico since the tribe was greatly reduced by disease prior to contact with Europeans and their remnant merged with the unrelated Caddo, Choctaw and Tunicas.

They apparently lived neither in longhouses nor in tipis, but in the typical small, round cabins of the region; a deserted Biloxi village found in 1699 consisted of cabins constructed of mud (presumably over a wooden framework), thatched with tree bark.

The Biloxi culture had therefore almost disappeared before any scientific study of their way of life could be carried out.

The link takes you to an image of reconstructed Natchez dwellings - Biloxi cabins would have looked very similar but with sheets of bark replacing the straw thatch: