WOW ... I always try fanart of poison ivy, and seldom find those that impress me enough to take them to my favorites! His was one that exceeded the limits to impress me! Beautiful work, beautiful light and you were very wise in choosing the colors! congratulations!
Depending on the writer, Ivy has basically become a plant nymph or dryad. Prior to the reboot, her changes had gone so far that she exhaled oxygen and needed carbon dioxide to breathe. So when she conscents to wear "clothing" to interact with humans, it's likely that she grows the flowers/leaves from her own body to create her wardrobe. The level of modesty usually depending on the particular Title, Artist and editor.