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Scenes from the Adult Entertainment Expo

Photo: Josephine Bila | CNBC.com

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Kayden Kross and Bibi Jones

Kayden Kross and Bibi Jones sign autographs for fans. Kross has a multiyear contract with the popular studio Digital Playground, while Jones made news in 2011 for posing for a photowith National Football League star Rob Gronkowski and wearing in his jersey.

Photo: Josephine Bila | CNBC.com