Vintage 1960's long sleeve shirt dress by Lanz Original for Marshall Field & Company. The dress features a slight A-Line cut and fabric covered buttons. Fabric content  and size is unknown. Includes a matching belt. Measurements equate to a medium.

Measurements (lying flat): 
Underarm to underarm 18.5"
Shoulder to shoulder 15.5"
Sleeve 23"
Length 39"