They're a lot bigger than newborn, probably a medium. I haven't used FOE in yonks and forgot it doesn't have anywhere near as much stretch as swimwear elastic. I bound the front edges in suedecloth, eliminating the need to bugger around with overlapping FOE, which nearly always looks messy.
Holli's dress. Overall i'm pretty happy with it, but even though I narrowed it down more from the last time I used this pattern, it's still too wide across the shoulders! My skinny little clones swim in everything. It still fits adequately though, and she adores it-hence the dirty marks already, as trying it on involved going outside to show everyone and then having a shot on the swings.