How many months before your child's first birthday do you save up for the party?

Hi, Yes, since I have three kids, I do start saving for the birthdays. And it may sound bizarre, but my saving starts as soon as the birthday passes. ;p But, frankly speaking, I do start saving as and when I have a buffer for the month. And if we do not plan a party, then we use that money to get a gift for the children or go for a birthday celebration holiday. We did save for my first child's first birthday, and we ended up spending a bomb. But after that we decided that we will always have a decent party and nothing extravagant.