-Katie is 5'5" (1.67 m).
-Katie's natural hair color is blonde, so she needs to keep dying it black each three weeks for her role of Morgana in Merlin. As it's seen on the show, Katie's hair is down almost to her waist. She only gets extensions for those scenes where her hair is styled wavy.
-Katie wears all the time a gold chain watch that belonged to her great-grandmother. She declares it to be her favourite piece of jewellery.
-Katie has a large tattoo inked across the bottom of her lower back that reads 'Purity'. She also has a tongue ring and several piercings in her ears.