The gorgeous model and actress slammed the suggestion via Twitter on Friday (4 April) saying although she was all for girls buying their own gems, in this case it wasn't true.
After reading a tweet questioning whether she'd purchased her own ring, Kelly replied: "No I did not! Where do these nasty rumours and lies come from?!
"I'm marrying a very traditional man but there is nothing wrong with women buying their own rings. I just didn't."
Well, there you have it.
British-born Kelly announced her engagement to former Royal Marine and Gladiators star David in March, just twelve weeks after they started dating.
The couple are currently over in sunny LA where Kelly has landed a role in NBC sitcom pilot One Big Happy.
David's sister Angela told this week's Reveal: "David is ready to settle down with Kelly, have a family and grow old with her. They both want kids and are both serious about their careers. I think they'll last the distance."
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