Halloween // Costume ideas for a newborn & couple

Halloween is one of my favorite holidays, and our friends are coming out to visit us. We’re going to take our brand new baby (I’m talking 2 months old) trick-or-treating around the block. I need ideas for a costume for her and me and my husband - I’ll probably be wearing her while we’re walking, so I’m trying to come up with something clever! Thank you in advance!!