Following a screening of the first episode of the new series of X Factor, Cheryl told a UK news website: "I heard this rumour and I think a gentleman should never speak about a woman's age or weight but that's only if you're educated on how to treat a woman.”
"So, unlucky for him. And who listens to Simon Cowell these days anyway. Does anybody? I don't listen to him anymore."
Cheryl was referring to reports that Simon had mentioned she had ‘put on weight’ prior to her short-lived role as a judge on X Factor USA.
The 31-year-old also hit back at claims that she and fellow judge Mel B ‘only cared about themselves’ rather than their acts.
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"Simon said a lot to the contrary which is interesting. I actually did an interview with just me and him a couple of weeks ago where he was like, 'The reason I love Cheryl and Mel is because they really want to find talent.’"
The new series of the X Factor kicks off next month.