Yesterday we visited OH's sister and nephew. She asked about wedding plans, and we said we had just found a lovely suit and all the guys were getting fitted in a few weeks. She asked, 'what about Dad?' Oh told her thier dad would be going too. She then said 'well F (nephew) won't be able to make it, we 're away, but he can go anytime I suppose.' I sort of glanced at OH, as we have never mentioned F being in the wedding party, and I assumed he and sis must have decided something together. But OH very quickly brushed it off saying 'we haven't decided yet if to get F all dressed up... he hasn't really got a job so not sure.' FSIL was fine and we chatted and stayed for ages, but after we left I commented to my OH it was a weird thign to assume. He is racking his brains to think if he has ever hinted in the slightest that F would but suited and booted but doesn't think it has ever come up. So now I feel like SHOULD we have asked? FSIL obviously thought her son would be part of it, I am wondering if we have missed some custom we didn't know about... it's all weird to me, I would never assume anything about a wedding unless asked properly. I don't mind if F is in the wedding, but I think it would daft to get him in a matching suit without him even having a role. What do you all think?