How should this character look ???

I have this one female character who is an angel. Not exactly a guardian angel, but she comes down to Earth to help my main character who is also a girl. (Just mentioning that so everyone knows there is no romance involved in this story) Anyway, the main character won't know she's an angel into the end. While on Earth, she constantly bugs the main character because she wants the main character to continue working on her dream, I know it sounds corny and religious, but it has nothing to do with religion. I'm just wondering if she should have the stereotypical pale skinned, blonde haired, blue eyed look, or not. What do you think? I know it's not a lot of information but thanks for your help.