For your Hello Kitty party theme, here is a game idea that can be altered to fit the Hello Kitty party theme.
Check out Hello Kitty
Party Games for more free party games. Tracy, Joey, Thomas, Fifi, Mory and Rory are Hello Kitty and her twin sister Mimi's friend.
APPLE OF DISCORD: Each pair holds an apple between their foreheads. The leader gives the commands: "Three steps to the left!", "Three steps to the right!", "Squat!", "Jump!" etc. The pairs fulfill them. If the apple drops, the pair is out.