This casual combination of a crew-neck sweater and a white crew-neck t-shirt is extremely easy to throw together in no time, helping you look seriously stylish and ready for anything without spending a ton of time going through your closet. Feeling bold today? Switch up your ensemble by finishing with a pair of brown leather casual boots. While it can be tricky to stay on-trend on extra cold days, it's looks like this that prove it's actually possible.