I love being a twin because it is my normality, my special identity, and it means there is a world that only exists between me and my sister that no one else can understand or have access to, not even our husbands.

It's reassuring to know that there is another person alive who 'gets me' and whom I know intricately. We share the exact same genetic make up, think in similar ways, speak in similar ways and 'get' each other without the need to speak.

I cannot imagine being a singleton, nor do I imagine that it can be much fun. Twins always have someone the same age as them, that speak the same language as them. They discover and learn about things in their development around the same time. So we always have our equal in every sense with whom to explore and discover things with.

Also the gap between 'getting' the grown up world is unimportant to us. whereas a single child or one with siblings of various and differing ages are always confronted by confusing clashes of the adult conversational world.

I know that my sister has always been with me since the genesis of our very existence. I'm sure we must have had some kind of awareness of each other even in our mother's womb - perhaps we even played with each other in the womb.

The other best thing about being a twin is knowing exactly how something would look on me by seeing what it looks like on my sister. When we were teenagers, rather than buying clothes that looked alike, we bought two sets of different looks so that we could get more for our money.

My sister is the dominant one, and I suspect that must have been the case in the womb as well - I am quite happy to be the quieter one.