This pattern is designed as photo prop.
Romper is knitted bottoms up, on double pointed needles as one piece as much as possible (to avoid sewing pieces together).
Size: newborn (up to 1 month old baby)

Materials used:
yarn: Aran weight, I have used Drops Air 150m/50gr (MC) & Drops Brushed Alpaca Silk 140m/25g (CC)
needles: 8US/ 5.0mm - selection of DPNs & circulars
tapestry needle
buttons 10mm – 4pcs

Skill level required: Intermediate
CO = Figure-8 CO = https://www.youtube.com/watch?v=7LvanJobvjo
CO = long tail Cast On method
K = knit stitch
P = purl stitch
Kfb = knit stitch through front and back loop (increase)
K2tog = knit two stitches together
K3tog = knit three stitches together
s3k3 = slip three stitches, one by one, knit slipped 3sts together through back loops (mirror decrease to K3tog)
P2tog = purl two stitches together
ssk = slip, slip, knit two stitches together through back loop
psso = pass slipped stitch over
YO = yarn over
sl1 = slip one stitch knitwise
m1L = make one left
m1R = make one right
RS = right side of work
WS = wrong side of work
sts = stitches
BO = simple bind off

Gauge: 17sts x 24rows for 10cm x 10cm