[QUESTION]

In most fantasy settings, male warriors are dressed practically, comfortably, and in accordance with the environment. But female characters usually flaunt all their attractive features, and their clothing is minimal. This is a cliché, due to the fact that the vast majority of authors and consumers of this type of content are male. From an outside perspective, it looks comical, and that's why the fitting term "boob plate" was coined.
It's unlikely that the author of your artwork, Revan, was interested in how and with what this elf would fight the enemy, or how she would defend herself from bandits. He was clearly interested in a couple of curves, which usually fit into a boob plate.