Short women can't wear long dresses
"There's nothing like the presence of a floor-sweeping gown, so why should diminutive darlings have to miss out? A long column dress can actually lengthen your figure, especially in a solid colour with a cropped jacket, and worn with the right pair of heels - wedges for day, platforms for night - it's a flattering silhouette regardless of height." Flare
Nicole Richie at 5'1" tall looks amazing in long dresses.
So, it's confirmed then... "short women can't wear long dresses" definitely is a fashion myth.