The ITV1 talent show judge said that the show helped her ditch her image as a "maneater". Holden was famously involved in an affair with Neil Morrissey, while she was married to comic Les Dennis.
Speaking on Sky1 show Angela & Friends, Holden said: "I think doing Britain's Got Talent - you can't hide behind it. That's me. I know I cry all the time, but that's just all the hormones and that's me.
"I am a minx, but people can see that I'm not this man-eating girl that I was portrayed as, when I was married and had an affair and all of that. That gave me really bad form as a person. It was not about who I was, it was about what I had done."
When asked how she got the job on the panel, the actress added: "I think my name just happened to be in the producers' room, because I was supposed to host something else. I heard that Cheryl Cole basically wet her pants and decided that she couldn't do it. [Simon Cowell] told me that wasn't true, but I definitely wasn't first choice."
Britain's Got Talent will return for a fourth series on ITV in 2010.