My post a little while ago about the Lady Di sweater got me thinking about famous sweaters and I decided to post a few. I think this one is probably the most iconic.
This one gets my vote for the number two spot.
Looking up those two images lead me to people who made sweater wearing famous so of course I have to include this:
Mr. Rogers always wore classic sensible sweaters and one ended up in the Smithsonian Institute.
More famous sweaters here and here.