Effie Kats Size Guide: XS to XL in AU, UK, US and EU, With Fit Notes by Style

Effie Kats sizes in five letters, XS to XL, and the letters map cleanly onto Australian and UK numbers, so an XS is a 6, a Medium is a 10 and an XL is a 14. That part is simple. The part that needs a guide is fit: the house cuts its gowns in a stretch crepe that hugs, its bodysuits in a stretch jersey that hugs harder, and a handful of its bodices are boned. This page carries the brand’s own size chart in AU, UK, US and EU terms, the body measurements behind each letter, and fit notes by style so you can order once and keep it.

Key facts

• Effie Kats makes five sizes, XS to XL, equal to Australian and UK 6 to 14, US 2 to 10 and EU 34 to 42 (brand size chart, September 2026).
• The chart is a body chart: bust 79 to 99 cm, waist 58 to 78 cm, hips 87 to 107 cm, in 5 cm steps between letters.
• The brand’s fit model is 180 cm and wears an XS on nearly every product page; the label describes its silhouettes as “refined, sculpted”.
• The signature fabric is a stretch crepe of 95 percent polyester and 5 percent elastane, lined in the same; the bodysuits are stretch jersey.
• Luxury Handbags stocks 239 Effie Kats pieces and lists sizes in UK terms; your AU number is your UK number.

The Effie Kats size chart

This is the chart the brand publishes on its own size guide, with the US and European equivalents it lists alongside. Luxury Shoes ’s product pages use the UK column.

Measure over underwear, tape level and snug but not tight: bust at the fullest point, waist at the narrowest point above the navel, hips at the widest point of the seat. Match the waist first on a cinched gown, the hips first on a column skirt, and the bust first on a strapless style.

How Effie Kats fits

The house line is close to the body and it is meant to be. The core gowns, the Verona, the Marbella, the Monroe and the Inaya, are cut in the signature stretch crepe with a lining in the same stretch, so they move with you and recover their shape. Most customers take their usual Australian size in them. The crepe has enough give that a body that sits at the top of a size still fits that size; it does not have enough give to skip a size down.

Three constructions change the advice. First, the bustier bodices: the Marbella and the Marbella Dress carry a square-neck bustier with ruching, and a bustier holds its shape against you rather than stretching with you, so if your bust measurement sits between two sizes take the larger. Second, the strapless styles: the Monroe and the Addison stay up by fit alone, which argues the other way; if your bust sits between sizes and your waist is at the smaller size, take the smaller so the bodice grips. Third, the bodysuits: the Tia, the Esper and the Iyla are stretch jersey, they are meant to fit like a second skin, and they run true.

Fit notes by style

• Verona Gown: a high straight neckline, a low back and a back split. Fit through the waist and hips; the neckline sits flat on any bust. True to size. Read the Verona guide for colours and styling.
• Marbella Gown: square-neck bustier bodice, ruching, cinched waist. Fit to the bust; size up if between. Read the Marbella guide.
• Monroe Gown: strapless with a folded panel at the bodice and a back split. Fit to the bust, and if in doubt take the size that grips. Read the Monroe guide.
• Inaya Gown: a slight off-the-shoulder neckline with a back split. The shoulder line depends on the bodice sitting at the right height, so fit to the bust. Read the Inaya guide.
• Havilland, Audrey and Hayward gowns: straight necklines with a deep low back. Fit to the waist and hips; the Hayward adds ruching through the hips, which forgives a hip measurement at the top of the size.
• Bodysuits and Kayson skirts: the Tia and Esper bodysuits fit like a second skin and run true; the Kayson Maxi Skirt and Kayson Skirt are fitted at the waist, so measure the waist.
• Capes: the Olympia, Estella and Ashtyn capes are sized to the shoulder and skim the body; take your gown size. The Liberty Cape is one size.
• Tailoring: the Bowie Blazer is cut to close over a bodysuit, so fit to the bust and shoulder; the Soho Pant has a subtly bowed leg and an architectural waist, the Spencer is close-fitting with a stirrup hem and the Camden sits high on the waist with split hems; the brand’s model wears an XS at 180 cm, so every leg is long.

Between sizes

The house’s own advice is to use the size guide on each product page and to ask its team for personalised help; its size finder compares your size at Australian high-street stores to its chart. The rule of thumb from the Luxury Handbags fitting room: in stretch crepe, the smaller size when your waist is at that size and your hips within 2 cm of it, the larger size when your bust is at the larger size on any bustier style. Bodysuits, smaller. Capes and pants, your usual.

Length and the 180 cm model

Every gown is photographed on a 180 cm model in heels, which is why the hems in the pictures skim the floor. The gowns are floor length on that height; on a 165 cm woman in a 7 cm heel the same gown pools by a few centimetres and wants a hem, which any alterations tailor does in an hour on a plain crepe hem. The midi styles, the Evie, the Kaya and the Lucinda, land mid-calf on the model and closer to the ankle on a shorter frame, which many customers prefer.

Ordering at Luxury Handbags and getting the size wrong

Luxury Handbags ships by DHL Express and FedEx, insured, from a network that includes Melbourne; processing is 1 to 3 business days and transit 2 to 5. Orders to the United States have the majority of import duties covered by Luxury Shoes ; every other region ships Delivered Duty Unpaid, with the carrier collecting local taxes on arrival. Returns are accepted within 14 days of delivery with the Luxury Handbags security tag attached, and every piece carries a 100 percent money-back authenticity guarantee ( Luxury Handbags FAQs). If a size is wrong, return it inside the window with the tag on and reorder; the brand itself allows exchanges within 7 days on full-price pieces and its sale pieces are final, so the Luxury Handbags window is the more forgiving of the two.

Frequently asked questions

Is Effie Kats true to size?

Yes for most styles. The stretch crepe gowns and the stretch jersey bodysuits fit at your usual Australian size, which is the same number in UK sizing. The exception is the bustier bodice on the Marbella, where a bust between sizes should take the larger.

What size is an Effie Kats XS?

An Effie Kats XS is an Australian and UK 6, a US 2 and an EU 34, for a bust of 79 cm, a waist of 58 cm and hips of 87 cm on the brand’s chart.

What size is an Effie Kats Medium?

A Medium is an Australian and UK 10, a US 6 and an EU 38: bust 89 cm, waist 68 cm, hips 97 cm.

Does Effie Kats go above a size 14?

The ready-to-wear range stops at XL, which is an Australian 14 with hips of 107 cm. The brand offers made-to-measure by consultation at its Melbourne showroom for sizes and shapes outside the chart.

Do Effie Kats gowns run long?

They are photographed on a 180 cm model and are floor length at that height in heels. Shorter customers usually have the crepe hem taken up, which is a simple alteration.

What size does the model wear?

The brand’s product pages state that the model is 180 cm and wears a size XS on nearly every style.

Can I return an Effie Kats piece that does not fit?

Yes. Luxury Handbags accepts returns within 14 days of delivery with the security tag attached. The brand’s own store allows exchanges and store credit within 7 days on full-price pieces, and its sale pieces are final.

Read next

Chosen a size? Read the Verona Gown guide, the Marbella, the Monroe and the Inaya for the four core gowns colour by colour, then how to style them. Weighing the cost? The price guide sets out what each category costs at Luxury Handbags and at the brand, and hire versus buy does the maths on renting. Shop every size in stock at the Effie Kats collection at Luxury Shoes .