In ROTJ, Leia is captured by the ewoks while wearing her assault garb.
When Han and Luke arrive to be eaten, she is wearing a medieval gown.
Did the Ewoks happen to have one that fit her? Do you think she had just accepted that this was her life now? Her lover and that other guy she kissed are still in the woods being chased by the Empire on their way to destroy a planet killing weapon and she has gone through a wardrobe change. Do you think she intended to take a native lover and live as one of them until Han/Luke showed up?