How on earth do you get round this?? DD's birthday is on a weekend day, DD sees 3-4 small people very regularly and we know both parents very well and meet up socially altogether as families etc etc. Like us, each of her little friends have a smaller sibling, so to invite each one of them, we are actually inviting a family of 4. Do we just invite them all round and hope for the best or is there a cunning way to handle this??? DH is insistent that they're all invited plus another family of 4 who are friends of his...