Can girls cosplay as guys?

I want to cosplay Pip Pirrup from South Park. I am a Blonde haired girl with a bob haircut. I have a red shirt and brown bow tie, a blue-ish skirt and white knee-highs.I can work on an accent. I also have plaid shoes. I have blue eyes and people say I'm pretty (Hurrr). But do girls usually do this? Are there any pictures? I feel alone.