Tbh britney is more famous in 2017 for her work out regiment and killer body than her music. She should captilize on that and do something similar to like Jenny craig, she could make work out videos where u dance/ workout to her music with her. She could have shakes and vitamins and fitness equipment under her name. The slogan could be you wanna hot body you better work  ***** she could be the next Jillian Michael if she tryed