Brown Findlay, 23, appeared in the 2011 film Albatross, in which her character pulls up her shirt to buy cigarettes.
"To be honest, Albatross was naiveté and not knowing that I could say no," she tells British magazine Radio Times. "I had no idea what was going to happen and thought I was going to be shot from behind."
The actress appeared nude again in the V Series Labyrinth, but admits that may have been her last time. "In Labyrinth, it is a very fleeting moment that we shot in one take, but I did find it very odd being naked in front of lots of people," she said. "But actually, it's not something I would do again."
Brown Findlay, who surprised fans when she left the hit PBS series, also explained her decision to exit. "I was unsure about signing away another year," she said. "Leaving terrified me, and that's what made me want to do it. Being afraid and going into the unknown excites me and what scared me more was to keep going and then one day discover it was all I could do and wish I had pushed myself more. I'd prefer to fail and fall flat on my face."