It’s often erroneously stated on sites that Natalie & Janet were twins; if you watch the “Natalie In the Well” story (which is on YouTube from start to finish), however, it’s clearly written that Janet is Natalie’s younger sister (by one year).
Janet was introduced as an overweight woman with dark brown hair, who looked NOTHING like Natalie (other than facial features).
I’m always annoyed when I read that they were “twins”, when they only looked identical after Janet made herself over.
Yes, it’s incredibly far-fetched that a non-twin sibling could make herself over to look identical to her sister, but Kate Collins did such a stellar job.
The storyline has become iconic.