You see, I really don't like the word icon. I can't actually think of anyone I would call an icon. There are people who influence my style, some more so than others, but I wouldn't call any of them icons. I think for someone to be an icon they need to be on a mantle of their own and almost without comparison and I honestly can't think of anyone who falls into that category. I feel quite stupid saying that on a fashion forum, but there you go!
I don't think it is as simple as just influencing someone's style as pretty much anyone in the public eye influences people style-wise which would mean literally every celeb ever is a style icon.