Here's some screen shots of Yvonne Strahovski as hottie Agent Sarah Walker in Chuck. She is wearing a gray t-shirt and white panties as she climbs gets into bed with Chuck (Zachary Levi). from movie Chuck season 2, episode 21 - "Chuck Versus the Colonel"I don't think that it bothers Yvonne to be seen wearing underwear on TV. For some reason people in the U.S. are much more concerned about partial nudity then many other parts of the world. Realisticly you can see more flesh exposed at the beach.