What do a sultry soul singer, a sexy reality starlet known for her bodacious butt, a rodeo cowboy, a Hall of Fame quarterback, an openly gay former boy-bander and the 74-year-old “Mrs. Brady” have in common? As In Touch can exclusively reveal, they’ll all be getting their groove on during the seventh season of Dancing With the Stars! “Toni Braxton, Kim Kardashian, Jewel’s boyfriend Ty Murray, Dan Marino, Lance Bass and Florence Henderson will all be competing,” an insider tells In Touch. “The cast is eclectic and diverse: We’ve got young, old, gay, straight, dance professionals and people who’ve never danced before. Some of the cast are already starting to work out and train, even though they won’t meet their dance partners for a few more weeks. It’s shaping up to be the most fun season yet!” When asked for comment, an ABC rep said, “We are not at liberty to confirm any casting rumors or details prior to the official cast reveal taking place on Good Morning America, August 25.” Season seven of the smash-hit dance competition will premiere on Monday, September 22, at 8 p.m. ET.