'Dancing With the Stars' 2017: Season 24 celebrity cast and partners revealed on 'GMA' Simone Biles, Nancy Kerrigan, and Mr. T are among this season's contestants.

 -- The cast of season 24 of the hit reality TV show "Dancing With the Stars" was announced live on "Good Morning America" today.

This season's lineup of stars features decorated Olympic gymnast Simone Biles, legendary figure skater Nancy Kerrigan and "Real Housewives of Beverly Hills" star Erika Jayne, among other celebrities from music, television and sports, who will be hitting the dance floor to battle one another for the mirror ball trophy.

Biles, who will be dancing with Sasha Farber, joins the cast the season after her Olympic teammate Laurie Hernandez took home the trophy last season. Hernandez said winning the mirror ball brought her the "same joy" as winning her Olympic medals. Val Chmerkovskiy, Hernandez's partner last season, is back, teaming up with Fifth Harmony singer Normani Kordei.

The season 24 premiere will be the 400th episode of the hit show, and many fan-favorite pro partners will be returning to compete, including Maksim Chmerkovskiy and Peta Murgatroyd, who welcomed their first child together in January. Veteran dancer Kym Herjavec is back from a hiatus after marrying her former "DWTS" partner Robert Herjavec.

The celebrities and their partners appeared live on "GMA" today.

The new season of “Dancing With the Stars” premieres on Monday, March 20, at at 8 p.m. ET.

Simone Biles with Sasha Farber

Bonner Bolton with Sharna Burgess

Charo with Keo Motsepe

Chris Kattan with Witney Carson

David Ross with Lindsay Arnold

Erika Jayne with Gleb Savchenko

Heather Morris with Maksim Chmerkovskiy

Mr. T with Kym Herjavec

Nancy Kerrigan with Artem Chigvintsev

Normani Kordei with Valentin Chmerkovskiy

Rashad Jennings with Emma Slater

Nick Viall with Peta Murgatroyd

The new season of "Dancing With the Stars" premieres on Monday, March 20, at at 8 p.m. ET.