A Shaley is a girl who can almost be described as perfect. She has a large mass of close friends who love and adore her. With her exciting and desired social life she is the main topic of conversation in a good way.
Not only is she incredibly beautiful, she has a personality that matches it perfectly. She's always nice to everyone no matter if it's her best friend or a total stranger she just met. If you ever met a Shaley you'd definitely know it as no one else compares. Sometimes she doesn't quite know just how amazing she is and denies it constantly.
Person 1: Dude, I'm dating Shaley!
Person 2: Ohmergawd, I am so jealous!