If you are planning a party, I recommend stopping first at one of these three sites. They are full of amazing ideas and gorgeous photos. They make me want to be a party planner!
Sara's Party Perfect (formerly Party Perfect Blog) is my first stop when I need event inspiration. Her new site has categories—Parties for Kids, Parties for Grown-Ups, and Inspiration and Sources. Even before she kindly featured The Violet Hours (here and here), I was a big-time fan.