Baby girls base layers for her first winters: one-piece thermal underwear from Deux par Deux that goes on under a snowsuit. Choose a purple gradient, a pink watercolor flower print or an allover smiley face print, all offered in baby sizes 6M, 12M, 18M and 24M.

Each jumpsuit is cut from super soft, thick brushed jersey with long raglan sleeves, a round neckline and an asymmetrical zipper closure, designed to keep little ones warm while they move freely. The same suits continue in kids sizes 2 to 14, handy when an older sister wants a matching layer.

Put one of our baby girls snowsuits over the top for snowy days, or keep her cozy in the car seat with baby bunting bags and footmuffs. Bigger girls can shop girls base layers, and hats, sweaters and more are in baby girls winter clothing.