Hoth Luke, Han, Leia, and Hoth rebel soldiers can be achieved using army surplus equipment and old 70s ski equipment:
Leia: The trick is finding the jumpsuit. We found British-made coveralls from 1987 (in mint unopened condition) at an Army Surplus. These are Nomex with fire-resistant coating - like the type racecar drivers use. They normally sell new for at least $100; I found them for $12.99. They have the PERFECT collar, waist cinches, and center Velcro opening. Need washing though - that fireproof stuff marinates over time. We added a vest made from quilting fabric, and a pair of boots from a thrift store.