Wednesday, April 13 2011 Hilary Duff signed autographs for fans before leaving Kimberly Snyder's book "The Beauty Detox Solution" event at The London Hotel Rooftop in West Hollywood, CA.Hilary Duff introduced and presented her friend Miley Cyrus with the Global Action Youth Leadership Award in February at the "Global Action Forum and Awards Gala. Event, hosted by Kara DioGuardi brought together celebrity activists and philanthropists from the worlds of entertainment, sports and business to discuss how to engage in world issues.
