Good old Chewie going the grope on Princess Leia. This looks like a photo taken on the set of Star Wars, a funny outtake, posed photo. Princess Leia looks to have a strange right eye.
Cool Star Wars Photos fact -Princess Leia awarded Medals Of Honour to Luke Skywalker, Han Solo, and Chewbacca after the Battle of Yavin, at the Grand Audience Chamber. It is a huge, open space located at the top of the Great Temple on Yavin 4.