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Combining gothic style with a ball gown silhouette, its perfect for weddings or proms

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You want your black dress to feel elegant and wedding-ready not like business attire

Waistcoat: Waistcoats are optional, but if you want to add one to your outfit, make sure it matches your suit

Caitlin McNeil put the picture on the website Tumblr after she and her friends could not agree on the colour, a dilemma shared by millions of friends, family and work colleagues across the world

So many people have questions about what exactly this means and what's considered appropriate, so we're here to help