Stretchy comfy marroon velvet Chipper California dress. Tags say “100% polyester hand washable 1830-2 5-6” and “professionally dry clean only.” Guessing this vintage dress is from the late 70s or early 80s.
Measures flat:

36″Long
Approximately 12 inches at waist that stretches to 13-14 (26-18 inches doubled). Elastic waist is still springy and new feeling.