Dancing With The Stars All-Stars announced

The all-star "Dancing With the Stars" cast was announced today for season 15, where for the first time ever, previous contestants will return to the ballroom to vie for the coveted mirror ball trophy.

The All-stars are:
Apolo Ohno (Season 4)
Shawn Johnson (Season 8)
Drew Lachey (Season 2)
Emmitt Smith (Season 3)
Helio Castroneves (Season 5)
Kelly Monaco (Season 1)
Pamela Anderson (Season 10)
Kirstie Alley (Season 12)
Gilles Marini (Season 8)
Joey Fatone (Season 4)
Bristol Palin (Season 11)
Melissa Rycroft (Season 8)

Another first in "Dancing" history, the 13th contestant will be decided by America in an online vote. Fashion commentator Carson Kressley (Season 13), singer Sabrina Bryan (Season 5), Disney Channel star Kyle Massey (Season 11) are vying for people's votes to score the 13th spot in the competition.

The all-star line-up will hit the dance floor on the two-hour season premiere of "Dancing With the Stars" Monday, Sept. 24 at 8 p.m. ET.