This is so funny! I was shopping in K mart about 1m before Hamish was born, and there were a couple in front of me with 2 kids. One was sitting up in the trolley, and the other was in the baby bjorn looking very little. I made some comment, and can you believe that they were actually twins!!!
There was a huge size and developmental difference between them, but apparently one had been more prem affected than the other.
I also coached 2 girls in netball that are twins. One is tiny - shehad alot of probs at birth, and the other is reaaaaaaally tall!

so yeah - crap question, but maybe something to it with some twins