Last week, Chris Evans said that Van Outen's professional dance background gave her an unfair advantage over the other celebrities.
The Radio 2 DJ said that he "loved Denise" but that she is "a professional actress/singer/dancer", adding: "Isn't it a story of aspiration from the beginning, the seeds of learning whether you do or don't have two left feet, to perhaps better yourself and becoming good if not better than you ever thought you could be?"
The 38-year-old presenter hit back in a blog post on her website, arguing that she is at no more of an advantage than other contestants.
She said: "I have to say that I was a quite upset at the criticism that I've come under from the press about my involvement with the show due to my previous dance experience.
"Secondly, I am not the only competitor that has appeared in the show that has had basic training. This competition is not musical theatre, it is ballroom, and this is a world that I am in NO way familiar with.
"Ballroom is totally different. Firstly I have never danced with a partner, you have to be in sync, remember your footings etc. These are things that I've never had to do in my career so far and this is a massive challenge for me."
Van Outen has been paired with James Jordan in the latest series, which premiered on Saturday (September 15) with similar ratings to rival reality contest The X Factor.
Strictly Come Dancing continues on October 5 on BBC One.
Watch Denise Van Outen on Strictly Come Dancing below: