<P> Cynthia `` Cindy '' Brady - née Cynthia Martin ( bottom left ) , portrayed by Susan Olsen in the TV show , The Brady Bunch Hour , The Brady Girls Get Married and The Bradys , Jennifer Runyon in A Very Brady Christmas , Olivia Hack in the theatrical films and Sofia Vassilieva in the 2002 TV movie , is the youngest Brady daughter . She was portrayed as a naive , but occasionally precocious little girl , who was most often seen wearing her hair in corkscrew curls or braids and had a pronounced lisp . She frequently liked to snoop and share secrets she had found out . In one episode , the family had to help her correct her habit of tattling . Cindy Brady also had various failed attempts at fame , such as attempting to break a world record for teeter - tottering , appearing on a game show ( on which she suffered from stage fright and had a catatonic attack ) , and trying to become `` the new Shirley Temple '' . However , she does play a pivotal role in helping Bobby meet boyhood idol Joe Namath by signing Bobby 's name to a letter stating he is `` really , really sick '' . </P>
<P> Cynthia `` Cindy '' Brady - née Cynthia Martin ( bottom left ) , portrayed by Susan Olsen in the TV show , The Brady Bunch Hour , The Brady Girls Get Married and The Bradys , Jennifer Runyon in A Very Brady Christmas , Olivia Hack in the theatrical films and Sofia Vassilieva in the 2002 TV movie , is the youngest Brady daughter . She was portrayed as a naive , but occasionally precocious little girl , who was most often seen wearing her hair in corkscrew curls or braids and had a pronounced lisp . She frequently liked to snoop and share secrets she had found out . In one episode , the family had to help her correct her habit of tattling . Cindy Brady also had various failed attempts at fame , such as attempting to break a world record for teeter - tottering , appearing on a game show ( on which she suffered from stage fright and had a catatonic attack ) , and trying to become `` the new Shirley Temple '' . However , she does play a pivotal role in helping Bobby meet boyhood idol Joe Namath by signing Bobby 's name to a letter stating he is `` really , really sick '' . </P>
who played the youngest girl in the brady bunch
who played the youngest girl in the brady bunch
Susan Olsen
Susan Olsen