For a Danish designer based between London and Copenhagen, By Malene Birger’s Mathilde Torp Mader has a solid understanding of classic American sportswear. For Spring she did a fine job of refining and translating the aesthetic so that it makes sense in the context of Danish design. A blue quilting pattern decorated a long-sleeve day dress, and baseball stripes appeared on an oversized overcoat. There were also baseball hats crafted with a basket weave and a high crown, which added a playful edge to the sporty ensembles and highlighted Mader’s appealing way of infusing herself into familiar aesthetics. Highlights included the cool green netting styled over one of the sleeveless printed dresses, the feather trim on a black coat, and the gold Brancusi-esque hardware decorating a few of the sharp linen tops.