On the scene: Oprah and Ellen on Michigan Avenue

When she was in town this summer, Ellen Degeneres tweeted that she'd be giving away tickets in Millennium Park to the taping of her TBS special. Well, Ellen was back in town this morning, and this time she tweeted that she'd be in Water Tower Park—and that she was bringing a friend. She and Oprah were passing out the latest issue of O Magazine (which features Ellen as a co-cover girl) to about 1,000 fans. Here are some photos from the scene.