does Hedi Kipling looks like Cassandra Goth's twin?

...not quite...

Not really. I think it’s just the similar hairstyle and color, and perhaps the fact that she wears glasses. Otherwise, I don’t see much of a resemblance.

It’s the hair I think. The faces aren’t that similar. This is why I have a hard time using Bella’s hair on another sim I always think they look like Bella in game. Same with candy’s hair from GTW. Since the hairstyles are so suited for those sims.