Girl, work those shoulders! With your shoulders broader than your waist and hips, look for a dress with a defined waistline that hits right at your natural waist. The classic strapless look will help your shoulders shine so avoid boat neck or spaghetti straps.
The full skirt of a ball gown will help create symmetry with your wide shoulders and a structured bodice and will accent your defined waist. Look for a textured top or accessorize with a little bling around your waist to really highlight the more narrow parts of your body.
Want to shake things up a bit and still show off your body? Try a short dress. The sight of your legs will help balance your broad upper-body giving the illusion of proportion. Even though it’s a short dress you will still wow the crowd. Who doesn’t love being a little more comfortable and showing a little more skin?
Another great style for your inverted triangle body shape is a trumpet or mermaid gown. The slim bodice with the flared lower skirt will do a nice counterbalancing act for your strong shoulders. The style will also hug your curves so you can really showcase your figure.
The key is to bring attention to your lower body is to help soften the broadness of your shoulders. Your waist and hips are the most narrow part of your body, so don’t be afraid to show them off! The look \will help you appear more proportionate and not so broad in the shoulders.
Here's some links to dresses that work great if you have a rectangular body style:
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