Harrypottersunknownsister cerita

What if there was a sister with Fred and George? And they were triplets, not twins? Imogen Weasley. Triplet sister of Fred and George. But then, something strange happens on the Hogwarts Express. Then, she realised that Fred and George were identical, but not her. Is she not a Weasley? And is she Imogen POTTER!?!! I hope you enjoy! All characters are J.K Rowling's except for Imogen, who is mine.