The blonde babe had been tipped to join the series, following her former co-stars Kirk Norcross and Mark Wright.
But Sam, one of the few original cast members still on the ITV2 series, insisted she had no plans to quite.
She said: "TOWIE is still such a big brand, I've been there since day one. I don't feel like I'm ready to leave yet."
Sam also said she hoped the new series of TOWIE, which continues on Wednesday, will be "more fun" than Series 4 earlier this year.
She confessed: "I felt that with all the new characters and story lines, it wasn't the best series for me. I was stressed out, but it's not going to be like that this series. It's going to be a lot more fun."