The designer of Lois wedding gown had been flown in from Milan, merely to make sure the bride looked exquisite in his latest frothy creation.
I think you want to say "Lois' wedding gown" or "Lois's wedding gown". I have to admit I have never figured out which form is correct, but you want to make it possessive.
Interesting that Lucy is there. I don't remember them even addressing Lucy not being there in canon. Of course she just vanished starting with "I'm Looking Through You", so I guess her not being there for the wedding being explained would have also created problems.
