“Dancing with the Stars” has become a part of America’s television landscape and inspired millions around the world to waltz, cha-cha and samba. Now, for the first time in its 14 seasons, the hit show gives television cameras unprecedented behind-the-scenes access to see how the wildly unpredictable reality show comes together on and off the dance floor. Hosted by “Good Morning America’s” Lara Spencer and by actor, “Good Morning America” contributor and former “Dancing with the Stars” contestant Cameron Mathison, “Dance Floor Confidential” takes viewers backstage to reveal the secrets to the music, the dance, the costumes, the tanning, the judges, and even the tension and high octane pressure that make the show one of the most competitive on TV. Also, former “Dancing with the Stars” favorites including Kirstie Alley, Joey Fatone, Julianne Hough, Ricki Lake and Mario Lopez talk candidly about the show that brought them a new level of fame, and in some cases, some dramatic weight loss. “Dance Floor Confidential: Behind the Scenes of ‘Dancing with the Stars’” airs as a special edition of “20/20,” MONDAY, APRIL 23 (10:01-11:00 p.m., ET) on the ABC Television Network.