A metallic gown already does most of the work. Here is how to choose the shoe, jewellery, bag, hair and wrap so it looks expensive rather than busy.

Maria Lucia Hohan cuts gowns, minis and corsets in French sizing: an FR 34 is a UK 6 and a US 2. Here is the full chart, the made size runs and how the adjustable backs change the fit.

Taller Marmo cuts Italian sizes IT 36 to 48 and says its sized pieces fit true to size. Here is the full IT to UK, US and EU chart, which kaftans are one size, and how each silhouette fits.

The Nour Hammour size guide comes down to one rule: most of the Paris house's clothing runs true to size, so take your normal size, but a third of the outerwear and knitwear is cut deliberately oversized and can be taken a size down. The house sizes on two ladders: letters XS to XL and French numerics FR 34 to 44. FR 36 equals a UK 8, a US 4 and a size S. Of the 102 Nour Hammour clothing styles on Coveti, 69 carry a true-to-size note, 32 are designed oversized and one is cut close.