Do you invite your child's whole class to your kids b'day party? or just some kids? is there an etiquette? I have some friends saying yes invite the whole class as it's not fair on others as the child is friendly with all the kids, I have another friend saying no big deal... my dd is friends with both boys and girls... so I can't just invite girls... as she wants some of the male friends to come too... but i'd be looking at about 22 kids with outside school friends even if 10 or so don't come, and have parents there too. is it crazy or not? she will be 5.