The collar necklaces is a hot fashion trend that we saw this year. They can be worn just with anything. Its a must have accessory. Pick one a wear it for an formal lunch, to office, to a movie. Depends on the diva inside you! I wore mine like this- With a buttoned up shirt worn here. This look never goes wrong. If you're not sure of how to wear a collar necklace, try this. It instantly adds the glam factor to what you're wearing.