betsy and adam one shoulder dress Bayley Metallic Invisible zip closure Betsy & Adam Women's One-Shoulder

Emphasized at the waist with a smocked waistband, it has a floaty, slightly asymmetrical fit at the front for a breezy silhouette

High Slit: Helps walking feel balanced and natural

Few couturiers are as closely associated with the British royal family as Norman Hartnell

Only choose this outfit if the invitation clearly suggests a casual atmosphere

Accessorise with Subtle Elegance: Pay close attention to the small details when assembling your Wednesday Addams-inspired look

To an extent, it still calls for a smart formal look, but there's a degree of flexibility, so you can afford to be a little more creative than with a black- or white-tie dress code