Vintage 1970s? Housecoat Textured Floral Tie Neck Colorful

Condition: Vintage with flaw - fabric at back hem wants to fold over hem stitching (see photos). Bottom knot button is slightly yellowed - see photo. Has no tags with size, fabric, or brand info. No other issues. Size: Unmarked Color: Blue, green, pink, yellow, white floral Design: Textured light housecoat with two knot buttons and a tie at upper front. No pockets. Materials: Unknown; feels like nylon or acetate to me. Measurements (approximate) Shoulders: 34" around Bust: 44" around Waist: 48" around Hips: 49" around Shoulder to Hem: 41.5" Sleeve Length: 13" *B19