Brady Bunch, The - Jan Is as Pretty as Marcia No Matter What She Wears!
In the episode, The Not So Ugly Duckling, Jan is talking to her parents in the living room. Jan is mad at Marcia and is wearing a white shirt with some kind of design on it and a red ribbon in her hair. After she gets done talking to her parents, she marches upstairs to confront Marcia. Watch carefully and you will notice that Jan is wearing a complete different outfit- a green blouse with a green ribbon in her hair.