winter uniform

In walked my sister last night for a casual Sunday family dinner, wearing a wintry outfit, comprised of a big, cozy turtleneck, slouchy menswear-inspired trousers, and sporty sneakers. The outside temperature didn't warrant a turtleneck, but she had just come from a freezing movie theater and, yes, she was eager to bust out her new winter uniform. I am too, and I'd like to break it in with this look from Asos.