Is this a cute nickname? Or a stupid one?

Okay. My name is Elizabeth, so my closest friends used to call my Lizzy which shortened to Izzy. Soon though (about 6th grade) I accidently put my name in one of my friend's phones as Dizzy. Dizzy! How cute! Everybody calls me Dizzy or Diz now. But if I'm going into Highschool, is Dizzy or Diz still a cute nickname? Or is it too babyish?