Bindi Irwin might be the frontrunner to talk home the Mirrorball trophy in tonight's Dancing With the Stars finale, but judge Carrie Ann Inaba isn't ready to call her a winner just yet.

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Irwin is one of three celebrities still in the running to win Dancing With the Stars season 21, with only Nick Carter and Alek Skarlatos standing in her way of the trophy. While she has received high scores alongside her partner Derek Hough all season, it's possible that an upset could go down.

At least that's what Inaba thinks. The judge spoke with reporters last night about who she thought would win this season, admitting that while Irwin is on top, an upset is always possible.

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 "It's hard. Bindi's been the front-runner. I think a lot of people are thinking that Bindi could take this home," Inaba said, before adding, "I would be a little worried when somebody seems to be such a front-runner. Sometimes people forget to vote. We've seen crazy things happen and upsets."

So will Carter or Skarlatos pull off a big upset? Carter certainly has his passionate Backstreet Boys fanbase that's carried him this far, while Skarlatos is surely big among conservative voters who have come to appreciate him for his background and his journey up to this point.

All will be revealed at the end of tonight's star-studded finale.

The Dancing With the Stars season 21 finale begins tonight (Tuesday, Nov. 24) at 9/8c on ABC.