Especially when buying a gift you might not be 100% sure what length to get. To help you make the choice easier, we developed this handy chart.
As you can see in the image, 18" looks quite different on a petite person than it does on an average person. Please refer to the chart below to make your choice.
If you're still not sure, it's always possible to buy an additional extender which can add up to 2 inches to your necklace.