I don't think she would have made a good Bella, besides I don't think she's beautiful, but Kristen is, for me, the most beautiful woman

Emma is too good to play such an awful role. Also, Bella isn't supposed to be beautiful, and Emma is absolutely gorgeous (unlike Kristen).

Well, I don't think it's an awful role and I don't think Kristen isn't beautiful, either. I think Kristen is really beautiful, much more beautiful than Emma Watson. I wouldn't say that Emma is hideous but I just can't apply the word 'beautiful' to her. For me, Emma Watson just somehow average looking, while Kristen is really stunning. But everybody has their own opinion, right

i don't thank emma would make a good bella swang i thank kristen would make is beter then emma

No, Emma couldn't make Bella, because she's not pretty at all. And Bella IS very beautiful. Anyway, I don't like Emma Watson

I don't think Emma Watson could have acted Bella. Weren't some of the Twilight movies filmed at the same time as the last Harry Potter ones? I doubt she'd have had the time to work on both. And there'd have been the issue of one franchise requiring her to colour her hair darker while the other needing her normal hair.

Anyway, it'd be a bad idea. There are enough fans comparing Harry Potter and Twilight without the 2 sharing the same main actress.