Bub is due in August, so just try and think what size he may be during Summer as lots of Summer clothes are going out dirt cheap at the moment. That's what we have done.
It's harder to buy for DD as she's so little, but we've grabbed some shorts and tshirts for Beez from Kmart for only a dollar or 2 each.
Thats true. Its so hard though. DD was tiny for AGES! so she lived in 0000 until 4 months and then was in 000 for a while and 00-0 until like a month ago!

I thought about maybe buying packs of body suits, long sleeve and short sleeve in white and getting iron on pictures and dyeing them. Kmart have jumpsuits for $5 each so i will have to stock up on them as they are an essential for my kids lol

Laybys will just have to be my thing from now on.

eta: atleast DD is sorted until she is 3 for clothes thanks to my wonderful SIL