Country crooner Billy Ray Cyrus (that's "Hannah Montana's" dad for you tweeners), former "90210" star Ian Ziering and Muhammad Ali's daughter Laila Ali will join former 'NSYNC member Joey Fatone in trying to wrestle Emmitt Smith's Season 3 crown.

Despite earlier reports, one star who will not be shaking her royal groove thang is the original Fergie, Sarah Ferguson, Duchess of York. Fergie's fellow countrywomen, Sharon and Kelly Osborne, were set to join the cast but have since backed out.

A rep for "Dancing" had no comment, saying "We can't confirm any castings at this point."

"Dancing with the Stars" premieres March 19.

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