A baker's dozen of Hollywood celebs are ready to dance again!

On Friday, ABC announced the almost-complete list of stars competing in the first-ever edition of Dancing With the Stars All-Stars.

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Premiering Sept. 25, the very special edition of the smash reality dancing competition culls previous champions and fan favorites from earlier seasons of the show. In a twist, the network announced 12 stars -- with the 13th competitor to be chosen by via votes online.

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Which DWTS celebs definitely brushing up on the cha-cha and fox trot? Check out the list below!

Actress and author Kirstie AlleyModel and actress Pamela AndersonRace car champ Helio Castroneves'NSync singer Joey FatoneGold medal gymnast Shawn Johnson98 Degrees singer Drew LacheyHunky Sex and the City actor Gilles MariniSoap star Kelly MonacoSpeed skater Apolo OhnoReality star, political daughter Bristol PalinBachelor star Melissa RycroftNFL star Emmitt Smith

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Plus, the Viewer's Choice All-Star choices -- vying for the final, 13th slot to be determined by view -- are:

Cheetah Girls singer/actress Sabrina BryanDisney star Kyle MasseyCeleb stylist and TV star Carson Kressley

Tell Us: Who will you root for this season?

This article originally appeared on Usmagazine.com: Dancing with the Stars All-Stars Cast Revealed! Kirstie Alley, Pamela Anderson, Bristol Palin and More!