Nanny Pat, Mark Wright, James 'Arg' Argent, Joey Essex and Amy Childs have all taken part in an episode of the Vernon Kay-fronted quizshow, which is expected to air later this year.
Arg said on Twitter: "Filming for Family Fortunes with Mark, Joey, Amy and Nanny Pat. If only you could see us now its so funny Team Essex (sic)."
Joey Essex added: "Filming for Family Fortunes! Ha ha how funny man! Loads of fun."
The cast of The Only Way Is Essex are also expected to take part in an episode of Yvette Fielding's Ghosthunting With... later this year.
The Only Way Is Essex returns for a third series in the autumn.
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