Famous actress Maureen McCormick portrayed Marcia Brady in The Brady Bunch and appeared in an episode of Marcus Welby, M.D. She was number 9 in VH1's list of the "100 Greatest Kid Stars": "Back on the show, I could eat whatever I wanted. Things changed. I am 5-foot 3-inches. At some point I stopped growing, and it is harder when you are small. We never dealt with [bulimia] on the show." Maureen McCormick quote.