Undies (retired)

Just a quick note on historical accuracy here, the chemise style IS accurate to the time (although a lower neck could've been used) and girls in the 1800s did not generally wear corsets until they began to develop a "figure" (thus the lack of corsets in the 1800s undie sets). Corded stays (soft and pliable) could've been worn to give the wearer a "landing place" for petticoats and such so they would not fall off the wearer's hips.