You are an hourglass if your shoulders and hips are about the same width and you have a well-defined waist.
Style tips for Hourglasses
Take advantage of your proportioned body shape and showcase your curves. While any wedding dress silhouette can do this, Sheath, Mermaid and Trumpet will especially flatter you.
Showcase your defined waistline with Natural waistlines and waistline accents like a jeweled or ribbon belt.
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Empire waists: they won't showcase your slim waistline