"I am so excited, but I cannot tell you how terrified I am," she told Ryan Seacrest on his radio show on Monday (August 17). "Dancing is something that I've always really wanted to be able to do, but never had the confidence and the technique, if you know what I mean. I'm not very graceful, so it's just something that absolutely terrifies me — and it's the main reason that I kind of wanted to do it."
The former MTV star admitted that one of the main reasons she signed up for the show is because she "wanted to do something different. I wanted to do something that scared me, and I don't think anything could scare me more."
Osbourne, who will be competing alongside Mya, who starred in "Chicago" in 2002, admits that she's ready for the challenge of dancing, something that she couldn't quite do when she starred in "Chicago" in London.
"I'm just excited to be a part of it," she said. "A couple of years ago, I was in 'Chicago' on the West End and I was originally meant to be Roxie — but when it came down to doing the dancing, I couldn't learn the dancing in time because I can't dance, so I went and did Mama Morton instead."
The singer — who doesn't care if she wins or loses the show — did seem excited by the chance to get fit training for the competition, saying, "My body is going to get sick and be toned.
"You make mistakes, you learn ... it'll be like a team of people going on a journey together, so it'll be fun," she said, adding, "I mean this from the bottom of my heart: I don't care if I win. I'm not doing this to try and prove that I'm better than someone else at something, I'm doing it because it scares me."