Vintage sizes vary a lot between brands, eras and countries, so please go by the measurements, not the tag size.
Every piece is measured lying flat, in centimetres and inches:
- Pit to pit: across the chest, armpit to armpit. Double it for full chest.
- Length: from the highest point of the shoulder to the bottom hem.
- Shoulder: seam to seam across the back.
- Sleeve: shoulder seam to cuff.
- Pants: waist (flat, doubled), rise, inseam and leg opening.
Tip: lay a piece you already love flat and measure it the same way, then compare.