Details: What: Hilary Duff in Concert. The Click Five opens. When: Wednesday, August 29 2007 Where: Mohegan Sun Grandstand Time: The Click Five, 35 minutes. Hilary Duff, 1 hour 10 minutes. Crowd: 3,092 It’s hard to believe it was four years ago that Hilary Duff took that plunge which is inevitable of all tween icons in this day and age (especially those of whom Disney has any control) and released her first album. When Duff, 19, returned to the State Fair for a concert (her last one was at the 2005 State Fair), one might have expected her fans to have grown up with her over the years. But instead of the attendees being over the tween age limit (the term applies to children between the ages of 8 and 12), most looked barely old enough to warrant the label. Perhaps it is Duff’s still wholesome image and avoidance of the regular tabloid appearances that prevent her demographic from aging as she does. But she plays the part of the tween queen wonderfully, complete with a full-on...