Party/cocktail dresses

4 black cocktail/evening dresses, one size 10, 3 size 12. 4 flowered party dresses two size 10 one short and one midi, 2 size 12, knee length. 16 petite flowered dress. I am very short, so with 2 being the exception, they almost all hit at my knee. One dress (white size 10) never worn. 4 dresses only worn once.