When purchasing an item, the measurements of the item is listed in the description.
So please measure yourself first to make sure that the clothes will fit you.
Crochet clothes, and especially cotton, has a tendency to give in size when worn and washed – this is taken into consideration when making the clothes which is why the circumference often is written with two numbers e.g. 72-82 cm.
This is also why most of the clothes is adjustable so that it will keep fitting you. Taking care will also ensure that the product will not stretch out of size.
Think as the clothes as handmade Italian leather shoes, which are tight when you first put them on, but becomes flexible and perfectly fitted when you start to wear them.