I am a mummy to twins! I cloth nappied them from birth (they were born at 38 weeks
) and yes, there are nappies small enough!
My faves were:
XS Motherease Sandys nappies
Diddy diapers by Nature babies
These 2 brands I found were nice and small and importantly, inexpensive to buy (you can get them really cheaply pre-loved too
I used motherease Rikki wraps over them and found them to work perfectly for us.
My twin girls just turned 3 the other week and are now out of nappies during the day! However, fell free to ask away if you think I can be of use in any way