Newborn size has a place, just not in bulk. Some babies wear it for a few weeks, others barely wear it at all if they arrive on the larger side. Buying two or three newborn pieces, rather than a full set, covers the first days without leaving a drawer of outfits your baby skips entirely.
If you're buying before the baby is born, you won't know their exact weight yet, and that's normal. What size to buy as a gift if you don't know the baby's weight covers the same guesswork, and the same logic works for parents stocking up early. Epic ships with tracked delivery worldwide and takes unworn returns within 30 days, so you can size down or up once the baby is actually here.
Muslin cotton helps either way, because it's forgiving. The double layer of cotton is pre-washed so it's already soft on arrival, and the open weave keeps a newborn cool without feeling stiff against new skin. If you're unsure whether to buy the printed newborn size or go up a size for extra wear, should you size up in muslin baby clothes walks through it, and do muslin baby clothes run big or small explains why muslin sizing can look different from other fabrics. Wash cold on a gentle cycle, skip the fabric softener, and the fabric will keep softening with every wash.