This combination of a crew-neck sweater and leggings is a safe and very fashionable bet. Balance this getup with a dressier kind of footwear, such as this pair of black leather ankle boots. A practical example of transeasonal fashion, this look is perfect this spring.
If the situation allows casual styling, consider pairing a crew-neck sweater with leggings. Give this outfit an added touch of elegance by finishing with olive suede ankle boots. As the weather improves, it's time to get rid of those heavy winter layers and opt for an outfit that's lighter, like this one here.