Yowzers! Of course, this is right by the Wrigley & Tribune Buildings (and where I've seen a lot of great bridal party shots that show Michigan Ave).
http://www.chicagobreakingnews.com/2010/07/photo-transformers-taking-over-michigan-avenue.htmlAccording to the article they'll be filming through Sunday. Hope this doesn't mess up any plans for our weekend brides...