Jackson Rathbone shows off his quirky hat on stage at the The Twilight Saga: Breaking Dawn: Part 1 Concert Tour held at the House Of Blues Chicago on Tuesday night (November 8) in Chicago, Ill.

The 26-year-old actor was joined on stage by Ashley Greene, Nikki Reed, Peter Facinelli and Charlie Bewley — as well as Christina Perri, who performed “A Thousand Years,” which is featured on the Breaking Dawn soundtrack.

Jackson recently dished to OnTheRedCarpet about how beautiful Kristen Stewart looked as a bride.

“Whenever Kristen walked down as Bella in the wedding dress, we … couldn’t breathe. It was just one of those amazing moments, where as an actor, you just don’t have to do anything but just be there.”

FYI: Nikki wore a Vanessa Bruno blazer and a TopShop dress with Kabana earrings. Ashley accessorized with Melinda Maria‘s Cluster Marquise Studs and Melted Deco Cuff.

35+ pics inside…