There is a twist, though: Billie Eilish, who is a vegan and an animal rights activist, said she would only wear one of Oscar de la Renta's gowns if the brand would stop selling fur clothing items (via The New York Times).

"I am beyond thrilled that @fernandogarciam1205 and @tokibunbun and the entire team heard me on this issue and have now made a change that makes an impact for the greater good, not only for animals but also for our planet and environment, too," Eilish wrote online. "I'm honored to have been a catalyst and to have been heard on this matter. I urge all designers to do the same."

The singer promotes more changes through her Instagram account, where she has encouraged her followers to go vegan, discussed the environmental benefits of this lifestyle, and shared her Taco Bell order of 20 bean burritos (via vegnews.com).