Why Goddess Lakshmi known as Gajalakshmi?

Gajalakshmi, that is Lakshmi with elephants, is one of the most significant Ashtalakshmi ("eight Lakshmis") aspects of the Hindu goddess Lakshmi; this aspect like most other aspects of Lakshmi is representative of prosperity, good luck, and abundance; and the Gajalakshmi motifs are very common in Hindu and Buddhist iconography.