Ex-TOWIE star Gemma and former EastEnders actress Danniella are each set to appear in new single episodes of the series, which will see celebrities open up about their personal problems to a professional shrink.
Gemma is set to open up about her turbulent love life, while Danniella is expected to speak about her experience of drug addiction.
A source told Daily Star: "They've both had lives more sensational than any soap opera so there's no doubt these sessions will make for very compelling viewing."
The new series of In Therapy is set to air in the Spring on Channel 5.
Rumours that Gemma would be signing up for the show was actually doing the rounds in November 2015.
Last year, Channel 5 achieved a ratings hit as viewers watched Katie Price take part in In Therapy where she opened up to Dr Claudia Bernat about her famous past relationships, motherhood and fame.
Gemma and Danniella were both recently seen on the 17th series of CBB, which wrapped up earlier this month. Finalist Danniella finished in fifth place and Gemma narrowly missed out on the final after getting evicted in the final week.
In other Gemma-related news, the reality star is set to make a return to TOWIE alongside Amy Childs to mark the show's landmark 200th episode during the upcoming 17th series.
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