Seeing the clue about a 'Star Wars' princess in a crossword, I usually lock in four letters: LEIA. It's the classic fill — short, recognizable, and shows up in tons of puzzles because constructors love iconic names. If the crossing letters line up, LEIA slides in perfectly and you can almost hear the blaster fire in the background.
If the grid needs more letters, constructors sometimes go for 'PADME' or 'AMIDALA' (Padmé Amidala was royalty early on), and on rare occasions you'll see 'LEIAORGANA' or just 'ORGANA' if they want a last name. Context is huge: the clue's phrasing — whether it mentions 'princess', 'senator', or an actress like 'Carrie Fisher role' — nudges which fill fits best. For me, seeing that neat four-letter slot is always satisfying; it feels like a small pop-culture wink in a Sunday puzzle.