Yolanda Foster isn't the only one battling Lyme disease in her family. The Real Housewives of Beverly Hillsstar revealed that her daughter, supermodel Bella Hadid, 18, and son Anwar Hadid, 16, are also suffering from the illness.

"When my two youngest children, Bella and Anwar, were diagnosed with chronic Lyme disease in early 2012, watching my babies struggle in silence in order to support me in my journey, struck the deepest core of hopelessness inside of me," Foster said at Thursday's Global Lyme Alliance inaugural gala, as reported by People.

Foster was also diagnosed with Lyme disease in 2012, and has documented her struggle with it on the Bravo show.

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"I remember when she was going into the first season of filming, she said to me, 'I don't know why this show was brought to my life, but for some reason, I think it will lead to something bigger,'" Foster's eldest daughter, Gigi Hadid, also a supermodel, said when introducing her mother onstage. "She realized that she could use this platform of this world-famous television show to spread awareness. She was honest, unapologetic, and raw in how she portrayed Lyme disease on social media and on the show from the second she announced to the world she had been diagnosed."

Foster dedicated her Power of One award to Bella and Anwar, promising that she "will walk to the end of the Earth to find a cure so that you can live a healthy life that you deserve."