I will probably throw a size 0-3 month sleeper juuuuuuuuuuust in case. But I highly doubt I will need it. It was weeks before DD fit into 0-3 at all. Honestly, NB was actually pretty roomy on her for a few weeks.
DD1 born 5/24/10.
Missed M/C at 14 wks Feb 2012.
DD2 born 5/14/13.
Missed M/C at 9 wks July 2015.
These outfits are so precious! Is is bad I kind of want to use the same one my first daughter came home in? She will already mostly be wearing her sister's clothes.