I know you asked about cloth nappies but I thought I'd mention the Huggies premmie nappies. You can't get them in the supermarkets, only through wholesale outlets. DD1 was 2.9kg and a skinny mini! She wore 00000 and premmie clothes for the first four weeks or so, 0000 were too big on her. I bought the Huggies premmie nappies from a place in WA called Nappy Online. They were brilliant and held everything in until she grew big enough to wear the newborn size.