long navy blue dress Zapaka Women Prom A Line Off the Shoulder Formal Dress with Appliques, Navy / US16W line Dress Navy Blue Straps Plunging V

Tegan by Rebecca Ingram features sparkle and lace in a sexy silhouette

The singer wore a backless silk ball gown designed by Vera Wang with a corseted waist, a full skirt and a 20-foot train

This zesty dressing has other uses, too

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Gathered side seam details