Argent was joined on the This Morning sofa by fellow cast members Jessica Wright, Billie Faiers, Kirk Norcross, Joey Essex and Mario Falcone.
The 24-year-old told This Morning hosts Ruth Langford and Eamonn Holmes: "Well, basically it's going to be called the 'Arg charity night'.
"I'm putting on a charity night, it's for Breast Cancer Care, and there's going to be various amounts of the cast doing certain performances, a bit of singing, a bit of dancing.
"There might even be a little bit of tapping, all live, and there's going to be some magic and stuff."
When asked whether they were nervous, Faiers said: "We're all excited, but I think a little bit of us is nervous.
"Who knows, anything could happen."
The live episode of The Only Way is Essex will air on Monday (December 3) at 10pm on ITV2.
Watch Lauren Pope talk to Digital Spy about the return of Kirk Norcross to the show below: