Vintage Sizes
Vintage sizes differ greatly in comparison to those of today. A UK 18 in the 1970s for example measures more like a UK 10 - this also varies. I have a vintage St Michael maxi skirt, size 18 on the label with a 26" waist.
I always measure my garments though and there are sizes within the description of each and every one of them. If you're unsure though and need further guidance with regards to a piece, just message me: loveleyvintage@myyahoo.com