Zoe, who finished third on the contest back in 2006, also suggested that Westlife star Nicky Byrne could be a dark horse.
She said: "I have to be impartial, but I think Denise and Kimberley will be good. Dani [Harmer] is looking good too, and Nicky could be a bit of a dark horse."
Speaking to Reveal magazine this week, Zoe also claimed that she would be giving dad Johnny Ball a tough time on her spin-off show!
She said: "He will get a harder time, but I will have to be careful, as there are all kinds of things that he could bring up about me!"
Zoe revealed: "I have told him to enjoy the experience. It's so much fun and it goes so quickly.
'It can be frustrating trying to pick up the moves, but I remember him telling me years ago that nerves and adrenaline can carry you along. But there are no nerves like when you are waiting to go on stage to do a rumba wearing Lycra!
Strictly Come Dancing 2012 continues this Saturday night on BBC One, with all of the celebs performing their second dance. The first results show will follow on Sunday, with one celeb getting the boot!