DD was 8lb 1oz when born and only wore bonds cosy cuff wonder suits (feet and hands fold over) and marquise singlet or t shirt suits until she was 7 weeks - granted they are stretched a bit but they also lasted that long.

she is still in most 000 outfits but some things are getting smallish and she'll be 16 weeks this week.

Just remember though brands vary considerably in fit so start off with a few in 0000 have a little in 000 just in case and see how you go from there.

Nae x