@Parker231 the dress is lovely.
It looks lemon in the picture, I think it may photograph quite light too.
Op asked if I would "wear this to a family wedding or is it too white and therefore could be deemed controversial??".
If it is yellow rather than white, I still think it's too white and wouldn't wear this to a family wedding.
Even if the bride said it was ok, there are plenty of other lovely dresses to wear.
That is my opinion. I wouldn't care if you/the OP wore it.