Kristen Stewart was "shocked" she "didn't pass out repeatedly" while filming her big screen dance scene.

The Hollywood actress stars as Marylou in drama film On the Road, alongside Garrett Hedlund and Sam Riley. Kristen wasn't looking forward to the dance sequence in the movie, which sees her doing an energetic routine with Garrett.

"When we shot the scene, we did it four times, and the song is four minutes long," she told MTV News. "I'm shocked I didn't pass out repeatedly. By the end of every single one, I was so completely dizzy. You can see my face. I'm as red as a fire truck. I can't even breathe.

"A room smaller than this full of 60 people. The floors really were bouncing. It was so cool."

Kristen is famed for her awkward nature, and feared looking silly while completing the film's dance sequence.

"We rehearsed a lot. That scared me so much, especially the way it comes in the book. It's just one little line. Dean grabs Marylou, and they do a love dance. People watch, and then it's on to the next thing. They toss her around. What is a love dance, you know what I mean?" she mused. "That's so intimidating. I don't dance."