bruce jenner 's second wife has praised her former husband for being ` a champion for those who share the struggle to just be who they are .
' she tweeted her message of support and pride just hours before bruce 's highly-anticipated sit down interview with diane sawyer is set to air on abc .
it 's the first public comment the former beauty queen , who was married to the olympic gold medalist from 1981 to 1986 , has said her former husband 's anticipated confirmation that he 's transgender and plans to live as a woman is as monumental as his olympic success that