VIDEO: Final Dress Rehearsal for Tonight's DANCING WITH THE STARS Premiere!

Today, GMA shared a behind-the-scenes look at the final dress rehearsal for tonight's DANCING WITH THE STARS Season Premiere. Get a first look below! Click here for a rundown of tonight's performances!

"Dancing with the Stars" is back with a new, dynamic cast of celebrities who are ready to hit the ballroom floor. The competition begins with the two-hour season premiere, live, MONDAY, MARCH 20 (8:00-10:01 p.m. EDT), on The ABC Television Network. The premiere - which marks the show's milestone 400th episode - will kick off with an exciting opening number featuring the celebrities dancing with the show's judges: Len Goodman, Julianne Hough, Carrie Ann Inaba and Bruno Tonioli.

This season's lineup of celebrity dancers includes the greatest Olympic gymnast in history, a two-time WORLD SERIES champion - and the show's first baseball player, a real housewife of Beverly Hills, a bull rider who survived a catastrophic injury, a member of the popular band Fifth Harmony, and the original "CuchiCuchi" girl, to name just a few. Each couple will perform a tango, cha cha, salsa, Viennese waltz and quickstep, vying for America's vote for the first time. No couples will be eliminated on week 1, and they will all advance to week two of the competition.

VIDEO: Final Dress Rehearsal for Tonight's DANCING WITH THE STARS Premiere!