Princess is a light brown tabby she-cat with a distinctive white chest and paws, green eyes, fluffy and soft fur, and a thick tail.

Princess is a kittypet who lives in the Twolegplace near the forest territories. She was born to Jake and Nutmeg alongside several littermates including her brother, Firestar. She gave him her first-born, Cloudtail, to be raised in ThunderClan. Firestar and Cloudtail occasionally visited Princess until the Clans moved to the lake territories on the Great Journey.