Last week Katie, 38, slammed 36-year-old Sam following her announcement that she was expecting her third child.
Katie said that it was totally the wrong time for Sam to have a baby, with her career having just started. She also predicted that Sam would be ‘the size of a tour bus.’
In an interview with a UK magazine this week Sam hit back, saying: “With Katie I just say bored, bored, bored, bored, generally bored of everything that woman says to be honest.
“At the end of the say she wants to make a living out of putting people down, she’ll be a very guilty woman when she goes to her death bed.”
Meanwhile, Sam also responded to comments made by Simon Cowell this week, which seemingly doubted her career.
X Factor boss Simon, 54, said: “We will wait and see. She will have a very successful debut album. (Is she) going to be as good as the final year we did? No.
“That was a very special year. I would love to find another Olly Murs or something similar to Olly.”
Sam, unsurprisingly, was not too happy with Si’s comments, hitting back: “To be honest, X Factor has made so many joke acts and not people who had potential, people that have had potential who have maybe been a bit fatter or older or not looked right.”
Even though Simon didn’t mention looks, Sam seemed to take his comments as an insult to her own.
She said: “They need to start looking at those people because then you get someone like me. I think they need to look a little bit further and it needs to be less shallow and they might be alright.”