Halloween...I know its only September

So Kevin and I are invited to a halloween party on the 30th of October, and his band will be playing. So I wanted to see if Grandma could watch Andrew that night since it will be loud and a very late night and well Kevin didn't like the idea that much. So anyways Andrew will have his first night away from mommy and daddy at the end of October (20 months old; I'm happy that we have a place and I know people who have left younger babies then him) Now that big issue is costumes??? No clue??? I have finally sterted Mariah's queen of hearts costume the bodice is almost dome. For Kevin and I I was thinking Jack and Sally (nightmare before christmas) then I thought if I am pregnate we could go as a witch and skeleton and I could put a baby Skeleton on my belly. (we are taking Jello shots and so I wonder if I will be able to enjoy them or not) I hope that we have big news to share. God knows I'm trying to make it happen. Still trying to figure out what to make Andrew for halloween. but there is still time.