Where can I find a Chicago Bears sweater reminiscent of the superfans from SNL??

Question

Also the sunglasses and hat?

Answer 1

The only place I could find that sells these (pricey) vintage sweaters is ebay.  The one example is listed below.  

As for sunglasses, you can just go for any aviator style sunglasses at walmart or the drug store.

The hat shouldn't be too hard to find.  As I recall, they wore your usual "C" hat or the ones with the bear face on it.