Singer Brandy also is in "serious discussions," a source tells Us Weekly.
Also making their way to the dance floor,NBA, say insiders: Jersey Shore's Mike "The Situation" Sorrentino and The Hills alum Audrina Patridge.
Who likely won't be appearing?
David Hasselhoff will compete on the 11th season of ABC's Dancing With the Stars, reports the new Us Weekly (on newsstands now).
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Ali Fedotowsky or her fiance Roberto Martinez -- despite the fact that past seasons have included Bachelor and Bachelorette stars.
ABC had no comment. The new season of Dancing With the Stars premieres Sept. 20.