DD1 (40w 4d) was in 0000s from birth until maybe 5 months....it would have been around that time, she was a winter baby and I remember when it got warm at the start of summer I put her in 000s because that was the only summer clothes I had but they swam on her still.

DD2 (40w) was in 00000 and premmie clothes for 3-4 months.

I just create little babies