Trousers: stunning organza open front “shacket” blouse, cover up, light jacket

Trousers brand, preppy, Very expensive looking & feeling resort wear, shacket / summer jacket. No size/materials tags, fits M, possibly a L too!Looks/feels like silk organza. Body/sleeves fully lined. No closure, lays open. Salmon, peach, chocolate stripes, vented hips, sleeves roll up! Flat measures 20.5" across chest and hips 29" shoulder to hem 25" sleeve Last 2 pics show 1 pin hole, 2 dark pin sized specks. Second pin hole at shoulder hard to see in photos Non smoking home.