Vintage 60s Tiffany Blue Crochet Dress & Duster

Tiffany blue 1960s crochet shift with duster jacket. Reminiscent of Lilly Pulitzer. Bought through poshmark but haven’t found the occasion to wear it. Excellent vintage condition, I’ve never worn it since having it for 2 years. Sizing info on last photo. Approximate size is a medium, most closely to a 6-8