There has never been a double birthday party in this house. One, I was really skeptical on stealing another child's sunshine by putting 2 parties on for 2 kids at the same time. Two, I worried relatives would hate buying gifts for 2 kids at once. And three, I figured it might cost a bit more doing all at once. But instead, it went so well that I plan to do family parties this way everytime. It works out since my first set was born Jan, Feb, and the second set is June, July. Dominic will actually turn 5 in 2 weeks and Mia turned 1 about 3 weeks ago. I know some people are highly opinionated on this subject and I used to be one of them, but after having one, I really enjoyed it and I think our family did too.