Could my dream girl exist or am I being unrealistic?

Hi I was just wondering if this person who I would call my dreamgirl could really exist or not. She's just someone who has a similar taste in music, appreciates my sense of humor (which can be very vulgar and sometimes offensive, but most of my friends appreciate it), and is laid back and someone who I can just sit and talk to for hours about very meaningful things or about nothing at all. I suppose these aren't really horribly uncommon traits but I kind of have a specific idea of how what she looks like. So I'm wondering if it would be possible for this girl with these traits and the specific appearance to exist or am I just being unrealistic?