“Sister Wives” stars Janelle and Kody Brown have addressed their 25-year-old son Garrison’s apparent suicide.“Kody and I are deeply saddened to announce the loss of our beautiful boy Robert Garrison Brown,” Janelle, 54, and Kody, 55, quickly posted Tuesday to their separate Instagrams after TMZ broke the news of his death.“He was a bright spot in the lives of all who knew him. His loss will leave such a big hole in our lives that it takes our breath away.