I know R wasn't a micro premmie but we used pampers on R as they were extra small whereas the huggies newborn were much bigger.
King Edward Memorial Hospital in Subiaco here in W.A. have a breastmilk bank. Contact them and see if something can be arranged... its just a thought.
Also, ask them what they use for their micropremmies e.g. diapers. ASk S what her twinnies are using.
here are some websites as well:
www.austprem.org.au (I can't access this site for whatever reason. You might like to contact them and ask about the above).
Site above ships huggies premmie nappies. (note not micropremmies but from 2-4kgs).
Huggies neo-natal nappies available here but looks like most of the suppliers are Mothercare... do you have Mothercare in Malaysia if so ask them if they supply the premmie huggie nappies.