Size charts Oct 21, 2026 4 min read
Costume Size Chart (Halloween, Cosplay)
Costume sizing varies wildly by brand. Always check the specific costume's measurements, not just S/M/L. Children's costumes use age bands.
The Chart
| Adult Size | US | Bust/Chest | Waist | Hip |
|---|---|---|---|---|
| XS | 0-2 | 30-32" | 23-24" | 32-34" |
| S | 4-6 | 32-34" | 25-26" | 35-36" |
| M | 8-10 | 36-38" | 27-28" | 37-38" |
| L | 12-14 | 39-41" | 29-30" | 39-41" |
| XL | 16-18 | 42-44" | 31-33" | 42-44" |
| 1X (Plus) | 16W-18W | 42-44" | 34-36" | 44-46" |
| 2X (Plus) | 20W-22W | 45-47" | 37-39" | 47-49" |
| 3X (Plus) | 24W-26W | 48-50" | 40-42" | 50-52" |
FAQs
Why do costume sizes vary so much?
Costume manufacturers use different baselines. Generic 'Adult M' could fit US 8 or US 12 depending on brand. Always check the listed measurements, not just letter size.
Should I size up?
Often yes. Costumes are usually one-time wear made of cheap fabric with little stretch. Tight costumes tear at seams during wear. Size up 1 if between sizes.
Need this on your store?
Tailor Size Guide ships pre-built size charts for Shopify.