That's the rub... we are family. It's my nephews wedding. I helped raise him from birth, they lived with us when I was a teenager. I have 6 siblings, only one sibling was invited. The rest of us were not and are really shocked and saddened.
I don't believe it's lack of money. The bride's family is wealthy and footing the bill. I learned from the one sibling that was invited that it is going to be lavish affair, black tie, seated, multiple courses, etc.
My sibling whose son did not invite his aunts and uncles refuses to address us about it. Did they think we wouldn't find out about the snub? This sibling is my son's godparent. I'm totally at a loss here.
Edited to add: we live in the same city and see each other often.