The stars of the iconic sitcom took to social media today to mark the 50th anniversary of the Sept. 26, 1969 premiere. 50 years ago today The Brady Bunch pilot 'The Honeymoon' first aired," tweeted Maureen McCormick. "This show and all the crew, cast, extended family members, and fans of the show will always hold a very special place in my heart. Happy 50th Anniversary The Brady Bunch!" Christopher Knight added: "As you can see we have stood the test of time and probably will forever thanks to all of you who have shown us so much support over the years!"