It's easy to get a bit birthday-obsessed these days. Just spend a few minutes on Pinterest, and you'll quickly find yourself planning your tot's next big day. But if you can't wait that long, there's a new party trend that's gaining momentum – the half-birthday celebration. It's perfect for kids with Summer birthdays who want to celebrate with their school friends during the year, as well as those with Winter birthdays who have always dreamed of an outdoor soiree. The half-birthday party is held exactly six months after the date baby was born, and it can be filled with all of the accoutrements used for a birthday celebration. Don't believe us? Check out what other parents have done for the semiannual party.