A sub-category of poser
A very shallow female who is only a fan of someone or something (an actor/band/athlete) because she wants to stare at cute guys and she dreams about having sex with them. You can spot a fan girl on the internet by reading what she posts on websites:
OMG orlando bloom is sooo freakin hawt!!! I want to have his baby!!! *squeal*
To view comments made by real fan girls, click on the following:
orlando bloom brad pitt billie joe armstrong leonardo dicaprio
Since the dawn of time, fan girls have been loathed by true fans (myself included). It's okay if you think someone is "sexxxy", just don't share it with me!
Half the people who go to Green Day concerts these days are fangirls who never heard of them until months ago. HE'S MARRIED! GET OVER IT!
A comment to all the fan girls reading this: Don't worry, I'm sure SOMEONE will have you.....(heh).