Choosing the right length for a pendant chain depends on personal style, comfort, and the desired look. Different lengths can create varying visual effects and suit different necklines. Common pendant chain lengths for women include 16 inches (choker length), 18 inches (standard length, sitting just above the collarbone), and 20 inches or longer (falling lower on the chest). It's helpful to consider your body type, the style of the pendant, and your own preference when selecting the length. You can also try on different lengths to see which one flatters you the most.