16. Sam (Jamie) Finds His Kilt Liberating. from 25 Fascinating Facts About Outlander
"Sam/Jamie wears his with almost a long skirt hanging down the back that swings beautifully when he moves," Outlander costumer Terry Dresbach says. Sam himself told us that he hates wearing trousers and finds kilts "liberating" and "freeing"…Especially while riding a horse. [See the video.] And now we forgot what we were saying.
Jamie Fraser (Sam Heughan) in Episode 209 "Je Suis Prest" of Outlander Season Two on Starz via https://outlander-online.com/2016/06/04/1680-uhq-1080p-screencaps-of-episode-2x09-of-outlander-je-suis-prest/