Belle Delphine Princess Peach Cosplay Onlyfans Set Leaked. Belle Delphine (Mary-Belle Kirschner) is a South African-born English Internet celebrity, pornographic actress, model, and YouTuber. She first gained popularity in 2018 through her cosplay modeling on Instagram. The next year she gained mainstream news attention after creating a satirical Pornhub account and selling her “GamerGirl Bath Water” product through her online store. After a hiatus from October 2019 through June 2020, she started an OnlyFans account on which she posts adult content and began uploading YouTube music videos that were markedly explicit.