Compare alpha sizes (XS–2XL) and regional numeric systems for tops and pants using body measurements when possible.
Charts reflect commonly published conversions. Fashion vanity sizing can drift by brand and decade, so measurements beat labels when ordering online.
For structured garments, size up when you need ease; for stretch knits, many people stay with the closer measurement. Check the retailer’s return policy when unsure.
Kids’ sizing often tracks age bands and height more than adult alpha sizes. Use youth-specific charts when shopping for children.