Martine McCutcheon, 38, took to Twitter to dismiss any rumours suggesting she would be entering the famous house.
She wrote: "For the record I am definitely not going in to celebrity big brother…"
The former EastEnders star then retweeted a fan who replied: "Good! You're better than that!"
One possible reason Martine won't be entering the house is that she is expecting her first child.
In August she revealed she was three and a half months pregnant with her first child with husband Jay McManus, 30.
At the time she admitted they had almost given up on their dream of becoming parents.
She told Hello!: "We'd always said that if we were fortunate to be blessed with a child, that would be wonderful, but we were always very aware that it's not a given.
"As a woman in her late 30s who's experienced health problems, I thought I might have to accept that it wasn't a path my life was going to take, but it would have been a great sadness in our lives if that had been the case."
Other stars rumoured to be appearing on the reality show include Marcus Collins, Katie Hopkins and Calum Best.