Core 7 Reference
Pinkie Pie ~ The Leader
Pinkie Pie is everyone's best friend! She's always dreaming up something fun to do that will keep everyone laughing and smiling all day long!
Pinkie Pie is Ponyville's resident party planner. She loves to throw parties for her friends' birthdays, and this sure keeps Pinkie very busy because she is friendly with every pony! She especially loves balloons of all shapes and sizes. Although she's good at planning parties, Pinkie Pie's greatest skill is friendship. Her warm and loving nature has made her everybody's best friend. Ponies often come to Pinkie when they need a little encouragement, some help solving a problem, or just for a friendly hug. When her birthday comes around, finding a present for Pinkie is easy. Her favorite color? Pink, of course!
extended story from kabillion.com