Spears joins the reality singing competition still riding the success of her seventh studio album . Even his fellow `` Voice '' judge , Christina Aguilera , cashed in on the group 's best-selling single `` Moves Like Jagger . '' Source : Being a mainstay on the show will bring a level of fame she has n't experienced in years . Spears has n't been accessible to her fans since she was placed in a conservatorship .
Spears joins the reality singing competition still riding the success of her seventh studio album . Source : Being a mainstay on the show will bring a level of fame she has n't experienced in years . Spears has n't been accessible to her fans since she was placed in a conservatorship .