Bella Thorne and Patrick Schwarzenegger Surprise High Schoolers in Chicago

Students at a Chicago high school got quite a surprise on Monday when Bella Thorne and Patrick Schwarzenegger showed up unexpectedly.

The duo is out and about promoting their new movie, “Midnight Sun,” about a teenage girl who can’t go out in the sunlight.

Knowing their target audience, Thorne and Schwarzenegger went straight to the source to whip up buzz for their new flick … teens.

Students from Nicholas Senn High School in Chicago, Illinois went wild for the stars. They snapped pics and took selfie videos with the actors and even got some signed swag.