Milly Black and White Polka Dot Midi Dress Size 12

milly black and white polka dot midi dress size 12 sleeveless with tiered ruffle skirt. zipper close. there is no materials tag and some fraying on the lining (see last photo), otherwise really good condition. measures approx 19" pit2pit, 43" long (I'm not entirely sure which style dress this is but it may have been hemmed, check measurements) cocktail business preppy party special event vacation italy