Floral dress

I purchased this dress secondhand. It looks homemade by someone very talented. Surger seams and all. No tags Top floral fabric is a sheer green floral, the lining is a blue/purple satin. Mid calf length. My guess is between size 4/6. Please see measurements for details Measurements flat: 17” pit to pit 12.75” waist 39.5” neck to hem 21” zipper