Rapper Cardi B is using her recent pregnancy to get into the lucrative weight-loss game by promoting a detox tea on Instagram. It’s all part of a slick marketing campaign that has enlisted a number of celebrities, including Demi Lovato, Kylie Jenner and even right-winger Sarah Palin. Many celebrities fail to disclose they are being paid to promote products to their legions of fans. For more, click here.