DS2 has been invited to a party of twins in his class. He has been in the same class as them for over a year, and is friendly with both of them: they both came to his party. I would ordinarily buy a present for each of them, and would like to do so; but he has explicitly been invited by 'boy-twin', rather than 'girl-twin' or 'boyandgirltwins', and I'm a bit concerned that I will be mucking up their system if he brings two presents. What do you think?
I don't really know the mum well enough to ask her.