Choose the Century Before You Choose the Mask

A Venetian mask will sit happily on almost any silhouette, which is precisely why it leads so many guests astray. The mask is the easiest decision of the evening; the century is the one that governs how the night actually feels on your body. Before you commit to a feathered half-mask and a cloak, decide whether you are dressing as a Baroque courtier, a Victorian gentleman or lady, or a Renaissance noble, because each brings a very different set of physical demands to a ballroom floor.

If you are planning the event as well as dressing for it, set the period firmly in the invitation. Ambiguity is the enemy of a good costume. Guests told "Georgian or earlier" will arrive in a muddle of eras, and a room full of mismatched centuries loses the spell you are trying to cast.

Baroque: Volume, Weight and Grandeur

The Baroque wardrobe is the most theatrical and, in practical terms, the heaviest. Brocade, silk taffeta and deep-pile velvet appear here, often all at once. Men's coats can carry several metres of fabric in the skirts alone, while women's gowns sit over boned bodices, stomachers and, in the earlier decades, wide panniers.

• Weight: a brocade coat with a full skirt can reach two to three kilograms before you add a wig.
• Width: panniers of up to a metre across will not pass through a narrow townhouse doorway or fold into the back of a taxi.
• Heat: velvet, a powdered wig and a crowded ballroom make for a flushed, damp evening.

Choose a lighter silk brocade rather than upholstery-weight velvet if you intend to dance more than three sets. A white powdered wig is wonderful in February and punishing in July.

Victorian: Layers and Etiquette

Victorian dress is the most forgiving to research and the least forgiving to wear for hours on end. The silhouette is built from the inside out: chemise, corset or stays, petticoats, crinoline or bustle frame, bodice, then gown. Every layer adds warmth and gently restricts movement.

• Width again: a cage crinoline occupies a surprising amount of floor. It will sweep a drinks table clean and will not fit behind a banquet bench.
• Bodices: boned fronts look magnificent but make seated dining uncomfortable. Check you can sit, eat and breathe before the event.
• Accessories: gloves, a fan and a small reticule complete the look, but a fan needs a free hand all evening.

Gentlemen have the easier bargain here: a well-cut tailcoat, waistcoat, cravat and trousers are comfortable for hours, and the only real risks are a too-tight collar and shoes that have never been worn in.

Renaissance: Freedom of Movement

Renaissance styles, roughly the fifteenth to early seventeenth centuries, are often the kindest choice for an evening of dancing. Italian gowns fall from the shoulder in soft, generous folds; doublets and hose allow men to move freely; soft leather or fabric shoes suit a sprung floor far better than a stiff heel.

The trap is informality. A loose linen chemise and a simple gown can read as "dressing gown" if the fabric is poor. Weight and finish matter more than ornament here: a good wool, a heavy silk or a fine linen in a rich, saturated colour will look noble, while shiny synthetic satin will not.

Renaissance dress also layers beautifully for winter. A velvet or wool cloak over a linen-lined gown keeps the cold out on the walk from the car, and can be removed once the dancing starts.

Fabric, Lining and the Dance-Floor Test

Whatever the period, the same practical rules apply. Natural fibres breathe; synthetic satin does not, and under stage lighting it turns a ballroom into a sauna. Line bodices and sleeves with linen or cotton so the costume sits kindly against the skin. For a winter masquerade, wool and velvet are your friends; for a summer one, taffeta, silk and light cotton are far kinder.

Before the event, do a full test at home:

• Walk, sit, climb stairs and twirl in the complete outfit, including shoes and headwear.
• Check your hem length. Two to three centimetres above the floor is the sweet spot; anything longer will be trodden on by other guests.
• Wear the shoes indoors for an hour beforehand. New period shoes and a polished parquet floor are a difficult combination.
• Test the mask. Eye holes must line up with your own, the ribbon should be adjustable, and the inside should not press on your nose after twenty minutes. If you plan to eat or drink freely, a mask on a hand-held stick is a practical alternative for the earlier periods.

Masks, Atmosphere and Magical Planning

The mask is the finishing touch, so treat it as jewellery rather than an afterthought. Feathers that droop by ten o'clock, glitter that sheds onto every shoulder, and rigid ties that give you a headache will all chip away at the mood. Look for a light papier-mâché or leather base, a soft velvet backing and ribbons long enough to sit comfortably over hair or a wig.

For the event itself, help guests succeed rather than struggle. Give them a clear period, a suggested colour palette, and a note on the venue floor and temperature. Provide a secure place for cloaks and a well-lit mirror near the entrance for last-minute adjustments. If you offer a costume rail or a dressing assistant, even the nervous guests will arrive looking magnificent.

Above all, remember that a period ensemble should feel like an invitation to play, not a test of endurance. The best costume is the one still dancing at midnight. Choose the era that suits your body, your budget and your stamina, build it in the layers that period demands, and you will carry the magic of the masquerade from the first candle to the last waltz.