In my opinion, the key to a good Han Solo shirt is finding the right material. Remember that Star Wars was made in 1977 so there were a lot more polyester shirts back then. Han Solo wears an off-white, almost beige, 3/4 sleeve loose v-neck shirt with a half-collar. I initially checked eBay and some thrift stores, and even tried to make my own. I ended up getting pretty lucky and found a vintage polyester shirt with puffy sleeves and a crazy '70s collar. I took that shirt and modified the sleeves and tucked in the collar to be more "normal". This is what I ended up with.