No matter what the season or occasion, a cardigan is one of the major keys to smart styling. This classic knitwear piece can perfectly transition your office wardrobe to your street style look. A cardigan brings versitality as a staple that can easily be dressed up, dressed down, or layered. I like to wear either a button up shirt or a t-shirt under my cardigans. If you are feeling a bit daring, go for a bold look by wearing a patterned or a strong pop of color cardigan and layer it underneath a jacket or blazer if the cardigan is thin enough.