blue vs gold dress Vintage Halter Sparkly Lace Dark Prom This elegant evening gown features a strapless Navy Blue Long Prom Dress

Low-cut back: Perfect for low-back dresses and tops, especially special occasion outfits

With a 2-button closure, it includes a chest pocket, two jetted pockets and an interior pocket for your mobile phone

Navy is widely considered a universally flattering color that works beautifully across seasons and occasions

So, when you're invited to a black tie optional wedding, you probably second guess what you should wear and what this on-the-fence dress code actually means

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