Browse through our Online Store product descriptions and, in the great majority of cases, you will come across a heading called Size Choice and you will be presented with a selection of months or years. But wait, since when have months and years been a measure of size? Well actually, in "Baby World", quite some time! But why?
We all know that babies come into this world in different sizes and begin to grow up at different rates. The number of these differences is enormous. For brands to supply baby clothes in a precise choice of dimensions, such as length (eg centimetres) and weight (eg kilogrammes), for every baby at every precise birth size and every precise development size, would be an extremely difficult task indeed. Our product descriptions would probably take up several pages for one item!
And so this is where the use of months (and sometimes years) comes in. With the general exception of premature baby clothes, you will find the great majority of baby clothes descriptions will offer sizes in months (plus Newborn - 0 months!). This is to guide you into choosing the right piece of clothing for your baby. Using age as a guide, you can make a pretty good assessment of how big an item of clothing needs to be at any particular stage of development, bearing in mind that you are not looking for a fashion perfect fit and that babies will rapidly change their size. 
But it is a GOOD IDEA to consult our Size Guide as well. This is intended to "home in" for you on a more accurate size for any given age, but do remember that it can be ONLY a guide! As well as the link given at the beginning of this paragraph, you will find a link to our Size Guide at the top of every single page of this Online Store.

And now for the nitty gritty!