Brandy has torn up the Billboard charts and now she’s setting out to tear up the dance floor. The platinum-selling R&B singer has joined the new cast of “Dancing with the Stars.”

The star of VH1’s “Brandy and Ray J: A Family Business” rounds out a diverse cast for the hit show’s 11th season, which includes singer Michael Bolton, comedienne Margaret Cho, NBA champion Rick Fox, Dirty Dancing actress Jennifer Grey, “Baywatch’s” David Hasselhoff, “Brady Bunch” matriarch Florence Henderson, Disney Channel star Kyle Massey, Sarah Palin’s daughter Bristol Palin, “The Hills” star Audrina Patridge, “Jersey Shore’s” Mike “The Situation” Sorrentino, and retired NFL quarterback Kurt Warner.

Past music stars that have competed on the show include Mario, Mya, Lil’ Kim, Toni Braxton, Mel B, Master P, and last year’s winner Nicole Scherzinger.

All 12 couples will dance for the first time on live national television during the two-hour season premiere on Monday, September 20, at 8 p.m. on ABC.

In addition to practicing her dance steps, Brandy is recording a new album set for release in 2011 and will perform with her brother Ray J at the BMI Urban Music Awards in Los Angeles on September 10.