For me, it's Sarabi.
Rani gets a close second. I'm a sucker for dark-furred lions.
Nala was ALMOST going to go on top, but her second movie colors kicked her down a few pegs.
Vitani and Zira look awesome, but I wouldn't put it on the pretty meter (not even their designs in the TV Show)
Kiara looks good, but I feel as though she could've looked better, more like her grandfather.