Charley, who first appeared in the eighth series of Big Brother in 2007, entered the house last night as part of the Hotel Big Brother shopping task.
Charley she wasted no time in getting acquainted with the housemates, as she discussed Danny's real feelings for legendary housemate Aisleyne Horgan-Wallace, and gave Nick Henderson and Harry Amelia a good talking to about their relationship.
For this week's task, Big Brother have promised that "very familiar faces will be checking in as guests."
Producers said: "On top of that, the housemates will have a strict set of rules to follow, tasks to complete and a host of guest demands to contend with. To pass the task, they must not let standards slip."
The house will become a hotel, with six of the housemates being staff and the remaining three being guests. VIP guest and Aisleyne will be invited to choose these three.
It was already confirmed during Friday night's live eviction that outspoken racing pundit John McCririck will make a return.
John, 75, who was famous for his nose-picking and misogynistic comments while competing in the third series of CBB in 2005, is already in the house.
The ex-housemates just keep coming! We wonder who will be popping into the famous Elstree compound next?!
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