Watch as the Obama Presidential Center holds its grand opening ceremony on Chicago's South Side

The Obama Presidential Center's star-studded grand opening ceremony is underway Thursday, bringing a slew of celebrities and dignitaries to Chicago for the big event. The festivities are slated to begin at 11 a.m. and feature what organizers said would be "legendary performances by global icons and powerful remarks from today's most prominent voices." Bruce Springsteen, Stevie Wonder, Christina Aguilera, John Legend and Bono are just some of the many big names slated to perform.