How to Measure Yourself for a Cosplay Costume (Custom Size Guide)

Why do cosplay costumes need body measurements?

Clothing sizes such as “M” or “10” vary between brands and countries. The international standard ISO 8559-1 defines body measurements (for example how and where to measure the chest or waist) so that garments can be sized from the body rather than from a label. Its companion standard, ISO 8559-2, describes how sizes should be designated using primary body dimensions such as chest, waist and height. Following the same logic, our size charts are based on your body measurements.

What do I need to measure accurately?

• A flexible tailor’s tape measure (not a metal tape).
• A helper if possible – measuring your own back length or torso alone is hard.
• Thin, close-fitting underwear and bare feet.
• A mirror to check that the tape stays horizontal.

How do I take each measurement?

1. Height: stand barefoot with your back against a wall, heels together. Measure from the floor to the top of your head.
2. Chest / bust: measure around the fullest part of the chest, under the arms, keeping the tape level across the back.
3. Waist: measure around your natural waist – the narrowest part of the torso, usually just above the belly button. Breathe normally.
4. Hips: stand with feet together and measure around the fullest part of the hips and seat.
5. Inseam: measure from the crotch to the floor along the inside of the leg.
6. Shoulder width: measure across the back from the edge of one shoulder bone to the other.
7. Torso (girth) for bodysuits: measure from the top of one shoulder, down the front, between the legs and up the back to the same shoulder. This stops one-piece suits from pulling.

How do I choose the right cosplay size?

Check the size chart on each product page and match your body measurements to it. For spandex or Lycra bodysuits, height and chest matter most. For jackets, coats and armour pieces, make sure the chest and shoulder width fit comfortably over any layers you plan to wear. If you sit between sizes or your proportions differ from the chart, choose custom sizing and send us your measurements.

What about cosplay shoes and boots?

Measure the length of each foot from heel to longest toe while standing, and note your calf circumference for knee-high boots. Use the larger foot when choosing a size. See our custom cosplay shoes.

How much tolerance should I expect?

Made-to-order garments are cut and sewn by hand, so very small differences are normal. Our refund policy treats variances of 1–3 cm (0.4–1.2 in) as normal manufacturing tolerance, which is why measuring carefully is worth the extra five minutes.

Frequently asked questions

Should I measure over clothes?

Measure over thin, close-fitting underwear only. Measuring over jeans or a jumper can add several centimetres and lead to a loose costume.

What if I am between two sizes?

For stretch bodysuits choose the size that matches your height and chest; for structured jackets or armour choose the larger size, or send us your measurements for custom sizing.

How accurate do measurements need to be?

Aim for accuracy within 1 cm. Ace Cosplay treats differences of 1–3 cm from the size chart as normal manufacturing tolerance, so careful measuring matters.