Vintage 1970s dress, small / medium Blue

Vintage 1970s short sleeve dress. Excellent condition. All buttons present. No size, brand, or fabric content tags. Feels like polyester. Matching belt included, some damage on backside of belt. Best fit xsmall, small, and up to a small/medium. Please see measurements. Any questions please ask. Part of Courtney Thompson-Partain estate. One cat friendly non smoking home. Retro, 70s, business casual, separates, theater, daily wear, vintage vibe, disco.