Weeks after making the announcement about their annual Big Jam concert series, Chicago's WGCI has now added more artists to their lineup. According to their social media page, Lil Uzi Vert and H.E.R. are now scheduled to perform at this year's event, which will take place on December 30th at the United Center. The event also includes Chris Brown, Rick Ross, Yo Gotti, Jacquees and more.
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