I loved how she stressed the importance of kids being outside and "being kids", which I love and how I am with my kids. Go outside! For cold weather, layering is huge. 3-in-1 coats, waterproof overall liners, and 1 piece fleece sets. Polarn O. Pyret offers more outerwear choices then other lines. Their bright colors and patterns are great for all ages and they have you covered from babies-12 years old.
Not near NYC? You can shop online. Need to learn about layering, check out their article about everything you need.
Check them out online too for all your winter layering needs.