The new kid's still way too small for this, but that's part of the plan. This light cotton jumpsuit is probably a spring/fall outfit, which is why it was marked down like 75% at Takashimaya in December.
There were lots sizes available; Though Album di Famiglia is one of the sweetest, minimalist clothing lines out there, I guess $110 infant car mechanic outfits were not quite the grandma bait Takashimaya had in mind.
Estella, where I first saw AdF, has a brushed cotton version in light grey. They call it a flight suit, it's mostly sold out, and it's not particularly inexpensive, even marked down to $79 [estella-nyc.com]