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"Generally it is thought that black is not usually worn unless in mourning, although Diana Princess of Wales did occasionally wear it for evening functions," Alexandra Messervy, Chief Executive of The English Manner etiquette training provider, told InStyle

Women working in a professional environment should ensure the dress hits at or below the knee, or even lower, like the flowy first option

White or silver ballet flats take your formal look to a whole new level when worn with black or brown dress pants

Dress it up with a statement necklace, a pair of black heels, and this amazing French Connection clutch

For a cocktail-themed wedding, opt for a chic cocktail dress in a midi length or above the knee length

Now the trend is to match your top with your denim