Cloris Leachman, known for her larger-than-life, kooky personality, sat down with “omg! Insider” co-anchor Thea Andrews for an exclusive interview about longtime friend Valerie Harper’s terminal brain cancer diagnosis. The 86-year-old actress talks about the devastation she experienced when she heard the sad news. To see the full interview, check out “omg! Insider” Thursday night on TV.