Add femininity - go for girly rouching and details to add volume.
Create the illusion of a waistline with cinching dresses.
Detail on top and plain on the bottom adds visual contrast and interest.
Use statement colour to focus eyes either on your top or bottom half.
Avoid sleeveless styles - they'll only accentuate your straight up and down torso.
Chunky wedge shoes don't help when you're trying to add the illusion of silhouette shape