In terms of an actual butterface and not just an average or cute looking girl who isn't to someone's personal taste, I nominate Kierra Wilde. Did porn for less than a year in the early 2010s. Did a few kink.com scenes, including a simulated abduction and rape scene where they were very careful to get her to say on-camera "I like this, this is my fantasy." Sexy and erotic, but I gotta say objectively butterface.