For Triangular Body Shape,
keep the focus on highlighting the upper body and camouflaging the lower body.
1. Wear knee length dresses, this will give an illusion of a balanced body.
2. Prefer straight fit dresses in cotton, soft khadi, polyester , any fabric that does not stick to the body and is light to medium weight.
3. If you want to wear fit and flare or A-line dresses, see to it that there are in deign details that focus on the lower body.