Korra, the Avatar and master of all four elements, depicted in a casual and relaxed pose wearing a sundress. The sundress should be colorful and vibrant, with a natural and flowing design that complements Korra's figure. The image should show Korra interacting with the environment, such as enjoying a sunny day or spending time with friends. The lighting should be natural and atmospheric, and the overall aesthetic should be peaceful and serene. The image should be rendered in a realistic style, using vibrant and lifelike colors and highly detailed textures. The composition should be dynamic and engaging, with the environment serving as the backdrop for Korra's casual and relaxed pose.