The feisty US stars both entered the house last night and it's emerged there is history between them...
Jenna said: "I am pretty cool with everybody but I know there is going to be conflict. If certain people are going in, like Tila Tequila...I don't forget a thing and in the MySpace days that bitch had something to say about me and I don't forget. I am really hoping that she has turned her terrible ways around otherwise I'm going to turn her head around!"
Jenna is famous for her adult movie career, while Tila is a reality star and singer, who had her own MTV dating show called A Shot at Love with Tila Tequila.
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