Speaking to Radar Online, Rossum explained that she tried not to worry about the scenes.
"It's my first time being naked on screen so it was definitely a little stressful," she said. "But I think you've just got to rock whatever God gave you and be proud of it."
Rossum also joked that filming the scenes was more difficult because the show was shot in high definition.
"Naked in HD is a little more stressful," she said. "I'll hope for the best. Hope for good lighting."
Showtime picked up the Shameless remake in April.