The first thing to consider when layering necklaces is choosing the right lengths. You want to choose different lengths to achieve a nice cascading effect.
Start with measuring the base of your neck, then add 2 inches in order to get your first necklace length. For the next layers, a good rule of thumb is to have at least 2in between each necklace.

We created a guide of the most common sizes and how different lengths will lay based on your neck size.